[[quoteright:300:http://static.tvtropes.org/pmwiki/pub/images/Olivia_Goes_West_7352.jpg]]

A FanFic/CrossOver fan fiction by Tropers/{{Surenity}}, which links ''Disney/TheGreatMouseDetective'' with ''WesternAnimation/AnAmericanTail'', and a sequel to ''FanFic/BasilsAmericanTail''.

A year has passed since Basil's battle with Ratigan atop Big Ben, and the Flavershams have moved to the American West to put that horror behind them. However, once arriving in Green River, Olivia's father is kidnapped once again. Can Olivia hone her detective skills to find him? Luckily, she'll get a little help from one Fievel Mousekewitz, setting the two of them off on a journey that will include many old friends and foes alike.

The novel-length, 30-chapter undertaking can be read on Website/DeviantArt [[http://surenity.deviantart.com/gallery/37317746 here]], or on Website/FanFictionDotNet [[http://www.fanfiction.net/s/8772062/1/Olivia-Goes-West here ]]. The third part of the trilogy, ''The Great Mouse Reporter'', is currently being written, and also available on both sites.

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!!Tropes:

* AbandonedMine: Jebediah's gold mine just outside of Green River. [[spoiler:Hiram Flaversham and Wylie Burp are imprisoned there, the former being forced to build a robotic duplicate of Ratigan and the latter forced to dig up gold. The final showdown takes place there.]]
* ActionGirl: Olivia, [[spoiler:especially with regards to [[AnArmAndALeg what she does to Chula]] with a tomahawk]].
* AllGirlsWantBadBoys: Tony comes to this conclusion about Tanya when talking to Vartan, sensing her crush on Ratigan. However, once Tanya discovers just how bad Ratigan is, she quickly renounces him and joins Nellie and Basil as an undercover spy.
* AlternateUniverseFic: Admittedly, in order to get Fievel and Olivia to be the same age, the events in ''Disney/TheGreatMouseDetective'' had to be moved to 1889 rather than 1897, while the story itself takes place in 1890. Plus, it happens four years after everything that transpired in ''FanFic/BasilsAmericanTail''. Otherwise all of the movies happened as normal, besides Nellie rejecting Reed Daley's proposal at the end of ''Mystery of the Night Monster'' because of Basil, and [[BroadStrokes some semblance of the events]] in "The Lost Mother Lode" episode of ''Fievel's American Tails'' having also taken place.
* AmbiguousDisorder: Fievel has Aquaphobia, judging by how he panicked and hyperventilated when he and Olivia were struggling through the Green River rapids, likely developed from his falling off the immigration vessel in ''An American Tail''.
-->'''Fievel:''' ''(panicking)'' All I wanted was to see the fish…
* AnArmAndALeg: [[spoiler:Olivia semi-accidentally lops off one of Chula's legs with a tomahawk. Though extremely painful, he does have seven legs left. However, he walks with a limp for the rest of the story.]]
* BadGuyBar: Green River's saloon is turned into one once Waul retakes ownership of it.
* TheBartender: Tony Toponi works as one in the saloon.
* BatmanGambit: [[spoiler: Basil ingeniously uses Cat R. Waul's obsession with Tanya's voice to shatter his and Ratigan's alliance and buy enough time to save everyone from Ratigan's trap, knowing that when Ratigan actually gets serious about executing Tanya as a hostage, [[VillainousRescue Waul will stop him]].]]
* BattleCouple: Olivia and Fievel when they try to rescue Hiram Flaversham and Wylie Burp. [[spoiler:Later in the climax, Basil and Nellie fight Ratigan together in the mine shaft.]]
* BeingEvilSucks: [[spoiler:Fidget]] starts to realize this before the end.
* BetaCouple: Basil and Nellie, as they're only a secondary focus in this story.
* BigBadDuumvirate: Professor Ratigan and Cat R. Waul.
* BilingualBonus: Much of Vartan's dialog for anyone who speaks Armenian.
* {{Birdcaged}}: This trope is used in two instances.
** After Professor Ratigan falls into Cat R. Waul's sandwich in the prologue, he falls unconscious and later wakes up caged in a birdcage, aboard a ship sailing to America and face to face with Waul who's ready to suggest partnership.
** After Olivia and Fievel's second rescue attempt of Hiram and Wylie fails, they're locked up in one of the birdcages of [[spoiler:the gold mine]]. Chula explains that their original purpose was to keep birds around to die in toxic gas leaks in order to warn humans in time.
* BirdsOfAFeather: Olivia grows to like Fievel more and more as it dawns on her how similar they are with their vulnerabilities and adventurousness.
* BratsWithSlingshots: Fievel uses a slingshot to shoot Fidget in the head and make him fall when the bat is trailing Fievel, Olivia and Tiger, carrying Chula at the same time.
* TheBrute: One-Eye, the big [[ExactlyWhatItSaysOnTheTin one-eyed]] cat from Waul's gang, serves as this for Waul and Ratigan.
* ButNowIMustGo: [[spoiler: Basil gets on a train to return to UsefulNotes/{{London}} at the end, and Nellie, after waiting for four years, joins him.]]
* TheChanteuse: Tanya becomes this when Waul hires her at the saloon.
* ClingyJealousGirl: Olivia has two small moments of being this well before she and Fievel become a couple. The first instance is when Fievel and Nellie recall their past experiences, making Olivia wish that she had known Fievel as long as Nelly has. The other instance is when Olivia learns from Fievel about Cholena and tries to (unsuccessfully) make Fievel jealous by telling him of her past {{precocious crush}} on Basil.
* CrossoverShip: Invoked of course with Olivia and Fievel, and returning from the prequel, Basil and Nellie.
* DangerouslyGenreSavvy: [[spoiler: Ratigan decides that this time he's going to stay and watch Basil fall into his trap until the roof starts caving in, rather than make the mistake he made in ''The Great Mouse Detective''.]]
* DetectivesFollowFootprints: Olivia employs this technique after her father's disappearance and finds footprints left by a peg-legged creature (Fidget). The trail ends in the spot where the bat took wing.
** Basil does the same weeks later in the river area and finds footprints that prove that Fievel and Olivia survived their forced whitewater rafting.
* {{Foreshadowing}}: When Fievel and Olivia first escape from [[spoiler:Jebediah's gold mine]], One-Eye shouts after them that now "[[InevitableWaterfall they are up the creek without a paddle]]".
* FunetikAksent: Olivia's Scottish accent, as well as several other characters.
* FurryConfusion: Olivia experiences some FridgeLogic when noting that Wylie Burp is bipedal, wears clothes and can talk, while back in London Toby the dog could do none of these things.
* GodInHumanForm: Though it is ''cat'' instead of ''human'' in this instance, Mousehicans believe Tiger to be the reincarnation of the Great Orange One, a catlike god who saved Mousehicans from a great cataclysm and [[KingInTheMountain promised to return]] to protect the mice from evil.
* GutFeeling: After Fievel and Olivia's alleged accident, Tanya is unable to banish from her heart the feeling that her brother is alive, even when she's still under the charm of Waul and Ratigan. Mama is very sceptical of this feeling, but Papa has learned to consider it to be possibly correct. Before Tanya encounters Fievel again, Nellie and Basil both assure that her bond with her brother is probably strong enough to make her feeling correct.
* GuysSmashGirlsShoot: Inverted when Olivia and Fievel are armed by helpful Mousehicans with a tomahawk and a bow when they go to [[spoiler:Jebediah's gold mine]] in order to rescue Hiram. Fievel figures that due to his experience with a slingshot, he would make better use of the bow, leaving for Olivia the tomahawk.
* HandGagging:
** Fievel does this to Olivia when she tries to voice her objections to the crowd that has been successfully captivated by Ratigan and Cat R. Waul's lies because they have nothing to prove their objections with.
** Later, Fievel has to do this to Olivia again when they're gathering information in [[spoiler:Jebediah's gold mine]]. Unfortunately, the effort comes a little too late.
* HeKnowsTooMuch: Olivia and Fievel know right from the beginning that Ratigan and Cat R. Waul are up to no good when they appear publicly in Green River. The villains are aware of this and offer a truce for the children: they can go on about their lives as long as they remain silent. However, when the children continue snooping around, they discover that Wylie Burp and Hiram are held captive at [[spoiler:Jebediah's gold mine]]. When Ratigan and Waul are informed of this, they decide to silence the children permanently.
* HeelFaceMole: Cat R. Waul claims to Green River's mice that he has seen the error of his ways after the events of ''Fievel Goes West'' and become a vegetarian like Tiger. He's able to convince the majority of them with the support of the conniving Ratigan, the captured Wylie Burp's public promotion of him to the sheriff and his "tokens of atonement".
* IKissYourHand: When Olivia and Fievel confess their feelings for each other, she says that they have to get her father's acceptance before they can be a couple and kiss. She still figures that hand-kissing is appropriate enough and lets Fievel do that to her.
* InevitableWaterfall: As part of Ratigan and Waul's [[MakeItLookLikeAnAccident concealed murder attempt]], Fievel and Olivia are trapped on Fievel's raft and sent down the Green River without oars. As they go down the rapids, Fievel is too stunned to do anything due to his resurfaced bad memories about being swept to the Atlantic Ocean, forcing Olivia to keep them from hitting the rocks all by herself. Fortunately, they survive the fifteen feet high waterfall (which would still be fifty feet for small creatures like them). When Basil investigates the place and finds proof that the children survived, he concludes that their small size and light weight allowed them to avoid hitting the rocks below the water.
* IntrepidReporter: Nellie Brie.
* KidDetective: Olivia aspires to become a great detective like Basil, and she puts to good use what she learned from him in her quest to find her father.
* KidHero: Fievel and Olivia, who are both twelve years old.
* LandslideElection: Ratigan is run against Fidget for mayor, with Fidget purposely making himself look bad.
* MakeItLookLikeAnAccident: Ratigan and Waul's plan to kill Fievel and Olivia is to send them down the Green River on Fievel's raft without oars, and then claim that they tried to rescue the children but failed.
* NeverFoundTheBody: After Ratigan's fall from Big Ben. [[spoiler: And indeed, after the story's climax as well.]]
* TheNicknamer: Tony Toponi, who has a nickname for everyone, calling Olivia "Livvie".
* NotTheFallThatKillsYou: Ratigan survived the fall from Big Ben by landing in Cat R. Waul's sandwich.
* NotSoDifferent: When Basil has Ratigan at gunpoint but doesn't shoot, Ratigan deduces the reason to be this trope.
--> For a moment, to the both of them everything else seemed to go silent, two enemies in a deadlock. As if they were the only two mice on Earth. All Basil had to do to end their little game once and for all was to pull the trigger. [[WhyDontYouJustShootHim What was stopping him?]] Ratigan suddenly grinned, as Basil remained stoic. Ratigan knew why Basil couldn't shoot him. It was the same reason Ratigan wouldn't be able to shoot Basil if the tables were turned. No, dying like that was too good for Ratigan, in Basil's eyes. It needed to be more climactic, more poetic. There needed to be an artistry to it. Ratigan understood. He knew Basil did too. Even falling from Big Ben hadn't done either of them justice. That's why they were alive.
* TheOneWhoWearsShoes: Olivia, who briefly wonders how Fievel can [[BarefootCartoonAnimal run around barefoot outside]] without hurting himself.
* TheOnlyOneAllowedToDefeatYou: This is Ratigan's view on Basil, and the reason Fidget warned Chula when the spider wondered if they could [[WhyDontYaJustShootHim simply kill]] Basil themselves and bring his body to Ratigan.
* {{Omniglot}}: When Basil speaks Armenian with Vartan, Nellie asks how many languages he can speak. His answer is thirty-seven (though he admits that his Swahili is rusty).
* OriginalCharacter: Vartan Mookian, Nellie Brie's Armenian assistant.
* PassingTheTorch: Wylie Burp is captured by the bad guys and forced to publicly resign his post as {{the sheriff}} to Cat R. Waul as part of the scheme to win the trust of Green River's mice. [[spoiler:After he's freed, he decides to truly pass the torch and makes Tiger the new sheriff like he had originally promised him.]]
* PetTheDog: As noted in canon, Waul absolutely ''adores'' [[TheChanteuse Tanya's voice]]. [[spoiler:[[VillainousRescue Enough to stop Ratigan from killing her in the climax.]]]]
* PrecociousCrush: Olivia used to have this on Basil after he helped her.
* PrematureEulogy: Ratigan gives one at Olivia and Fievel's funeral. Of course, they're still alive.
* {{Prematurely Marked Grave}}s: Both Olivia and Fievel are provided with these by Ratigan and Waul.
* ProducePelting: Fidget gets this treatment during the above mentioned LandslideElection against Ratigan. Later Ratigan himself is on the receiving end of this when his and Waul's masquerades are finally exposed.
* PuppyLove: Fievel and Olivia, eventually.
* RollercoasterMine: Jebediah's mine, which is one of the few elements in the fanfic taken from ''Fievel's American Tails''. [[spoiler: The climax takes place in a mine cart going down the mine shaft.]]
* SadisticChoice: [[spoiler: Ratigan's trap for Basil in the end clinches on him having to choose saving either Nellie or Fievel and Vartan, and not having enough time to save them all.]]
* SaloonOwner: Miss Kitty has been the benevolent version of this trope since the events of ''An American Tail: Fievel Goes West'' as the opposite of the villainous example of Cat R. Waul. However, once Waul returns to Green River, he retakes the ownership of the saloon from Miss Kitty by using his legal claim to it.
* SayMyName: [[spoiler:The last scene with Ratigan involves him shouting Basil's name right before the mine cart he's in falls into a chasm.]]
* SheIsNotMyGirlfriend: At one point, Tanya accuses Fievel of being Olivia's boyfriend, leading him to deny it out of embarrassment (as he's not Olivia's boyfriend at that point).
* ShipSinking: Nellie and Reed Daley (a canon pairing), as well as Tanya and Waul (a semi-popular fan pairing).
* SignificantSketchbook: Vartan's sketchbook.
* SleazyPolitician: Ratigan becomes one in the scheme to be elected as Green River's mayor and from there work his way up the political ladder to the president.
* SleepCute: Olivia and Fievel do this often.
* SmittenTeenageGirl: Tanya, who develops a bit of a crush on Ratigan at first, until she [[spoiler:sees Waul eating a mouse]] and overhears that they "killed" her brother and Olivia.
* SnoopingLittleKid: Both Fievel and Olivia.
* SolarPoweredMagnifyingGlass: While having to spend nights in the desert, Olivia uses this trick with her magnifying glass to ignite campfires for her and Fievel, having learned it from Basil.
* ThoseTwoBadGuys: Fidget and Chula.
* UnhandThemVillain: [[spoiler: Basil tells Ratigan to let his captives go, which given the design of Ratigan's trap would be a very bad idea.]]
* VillainTeamUp: Happens in the prologue between Cat R. Waul and Professor Padraic Ratigan.
* VillainsWithGoodPublicity: Cat R. Waul and Professor Padraic Ratigan win together the trust of nearly the entire Green River's population. They do this by Ratigan using his anonymity in America and charm to convince that Waul has [[HeelFaceMole reformed]] and become a vegetarian like Tiger, and forcing the captured Wylie Burp to publicly support them and [[PassingTheTorch make Waul a new sheriff]]. Of course, the entire masquerade is shattered near the end by the combined efforts of the heroes.
* WidowsWeeds: Tanya when attending the funeral of (still-living) Fievel and Olivia.
* YouHaveOutlivedYourUsefulness: [[spoiler:Ratigan decides to feed one of the three orphans to Waul to make it easier for Waul to continue keeping up his vegetarian act, reasoning that the orphans are perfectly expandable at that point. As Waul eats the fat orphan Roc, Tanya happens to witness this unnoticed and realizes how evil Waul and Ratigan are.]]
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