->''"Dangerous" because he's not, and "[[TitleDrop The Last Detective]]" because he's the last detective they'd send on a case.''

British mystery series starring Creator/PeterDavison as [[UsefulNotes/BritishCoppers Detective Constable (DC)]] "Dangerous" Davies; based upon the novels and characters of Leslie Thomas. Davies is a gentle, somewhat old-fashioned officer who clashes with his JerkAss colleagues, and is a rare example of a ButtMonkey protagonist, facing a separation with his wife and various incidents of ill-luck along with his colleagues' taunting. Despite this, he is a clever detective and always solves the case, often aided by his genius slacker friend Mod.

There had previously been a MadeForTVMovie called ''Dangerous Davies, the Last Detective'' starring Creator/BernardCribbins.

!!Contains examples of:
* AccidentalMurder: Rather a lot of it, often tragic. However, since the description of the death usually comes from the [[UnreliableNarrator perpetrator]], it's not always clear if the victim fell or was pushed.
* BewareTheNiceOnes: DC Davies is a genuinely nice man who cares about the people who want police help, but he's still a copper. He's also [[TheMissusAndTheEx a bit of a prick to his wife's boyfriends]].
* BloodIsSquickerInWater: A crime boss shot in his own swimming pool.
* ButtMonkey: Nearly every episode begins with something undignified happening to Dangerous.
* CowboyCop: Dangerous' [[UsefulNotes/BritishCoppers DI]] is a washed-up, alcoholic [[Series/LifeOnMars2006 Gene Hunt]] type who misses the good old days of honorable {{London Gangster}}s and PoliceBrutality. He's also an interesting version of NobleBigotWithABadge though, as he's actually ''less'' prejudiced than Dangerous' fellow officers who are modern police and often defends Dangerous from their taunting.
* DeathbringerTheAdorable: Dangerous is called that "because he's not".
* DeadpanSnarker: There's a strong undercurrent of snark beneath the niceness.
-->'''DI Aspinall:''' And the silly cow's got the cheek to complain about us - about ''me! Complain'' about me, can you credit that, Davies, somebody ''complaining'' about ''me?''\\
'''Dangerous:''' As you say, it's hard to credit.\\
'''DI Aspinall:''' And do you know what I say?\\
'''Dangerous:''' I don't know, Guv, probably something beginning with 'bollocks'.
* DeadPersonImpersonation: The episode "Lofty".
* DefectiveDetective: Dangerous' willingness to go after police corruption when he finds it leads to him being seen as one of these. His alcoholic boss, DI Aspinall, is a straighter case: at one point he gets into serious trouble when he loses a casefile in a pub.
* DiesWideOpen: Deconstructed when a still, open-eyed woman is taken for dead, which turns DisposingOfABody into AccidentalMurder.
* DirtyCop: Any officer considered a mentor or friend by Dangerous' DI will turn out to be one of these.
* DogWalksYou: Dangerous and his [[BigFriendlyDog pony-sized dog]], and Mod, who never walks less than a dozen dogs at a time.
* EmbarrassingFirstName: Mod is short for Modesty (after Tchaikovsky's brother).
* EnhanceButton: Used somewhat realistically in the episode with a SnuffFilm.
* EurekaMoment: Dangerous has one at least once per episode, generally during conversation with Mod.
* HehHehYouSaidX: DS Pimlott and DC Barrett may be grown men, but when it comes to this trope they're mental ten-year-olds, and anything from innuendo to Pac-Man is grist to their mill.
* GagPenis: One episode has Mod's current girlfriend inform Dangerous' wife that Mod is rather well-endowed.
* GoodCopBadCop: With Dangerous as the good cop and the other officers as the bad ones.
* GeniusDitz: Mod is extremely well-read, but lacking in practical social skills.
* IdenticalStranger: One episode has Dangerous investigating some gangsters, aided by an informant who looks a lot like Mod. Mod ends up getting badly beaten by the gangsters, who mistake him for the informant.
* IronicNickname: Take a wild guess.
* KavorkaMan: Mod frequently manages to hook up with gorgeous women (sometimes shown on camera, sometimes not) despite being an utter slacker.
* TheLastDJ: Dangerous himself.
* TheLastTitle: The title.
* TranslationByVolume: After the other detectives introduce themselves to a deaf woman, DC Barrett steps in with this trope. She asks, not unreasonably, if he's simple.
* MaleGaze: The episode "Christine" has Davies and DI Aspinall interviewing a financial advisor with a very short skirt. Several shots were from behind her legs and showed (as well as the aforementioned limbs) the DC and DI with suspiciously rigid expressions.
** The same episode presents a gender-flipped version in which Mod's legs get an airing. Viewers may differ as to the results.
* MotiveRant: Averted as generally the criminals (generally murderers) will have understandable reasons for their crimes and accept arrest with calm resignation.
* MurderDotCom
* NeverTrustATrailer: The [[OnTheNext preview]] for "Dangerous and the Lonely Hearts" seems to set up a ClearTheirName plot for DI Ray Aspinall. In the episode proper, his connection to the crime was tangential at best and he's never under any real suspicion.
* NoNameGiven: Dangerous' real first name is never revealed. His ''dog'''s name is never revealed, either.
* OnlyKnownByTheirNickname
* OvertookTheSeries: By Series 3.
* PluckyComicRelief: Mod
* ReadingLips: Helps identify the unknown victim of a snuff film, with the twist that the translator can't understand what she's saying. The sounds, written down phonetically, are eventually recognised as Polish.
* SnuffFilm: The plot of "Dangerous Liasons" revolves around a 20-year-old snuff film and the murdered man who apparently recorded it.
* StalkerWithACrush: The title character of the episode "Tricia" who almost messes up Dangerous' life as badly as she had that of several previous men.
* TarotTroubles: At the beginning of the episode "Dangerous and the Lonely Hearts". As is common for this trope, Dangerous' card isn't as bad an omen as the script seems to think: he gets the Hanged Man, associated with (among other things) transformation and hard-earned wisdom.
* ThoseTwoGuys: DS Pimlott and DC Barrett, Dangerous' rivals on the force. They're not nice guys.
* {{Yandere}}: The eponymous character in "Tricia" is also one of these.
* YouDoNotHaveToSayAnything: In the first episode, Dangerous starts saying this after chasing down a perp, but is so winded the perp completes the reading for him.