Also known as its subtitle, 'Being a Wholly Accurate Account of Matters Concerning Steam, Skullduggery, and the Reckless Application of Mathematics in the Late 19th Century'. A YA action/adventure comedy available online in pdf form as well as for purchase in hardback. {{Steampunk}}, with a smattering of adventure, romance, and instances of [[ForScience Science!]].
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!!Tropes specific to this book include:

* BadAss: The assassin, who manages to violently kill three of his top competitors in an office lobby while waiting to get paid. Then proceeds to blame their deaths on cancer. And claims that, as they died, they all signed contracts bequeathing their share of the reward to him. And the client buys it.
** [[TooDumbToLive Are you really going to argue with someone who alone just took out 3]] [[PsychoForHire hardened killers]]?
* TheChessmaster: Count Vladimere Von Orwick, otherwise known as 'the man who makes the trains run on time'. Among his various exploits: Blackmailing a thief with a pardon notice [[spoiler: which would cause every crime they committed to be publicized--therefore putting them in mortal danger]], assigning a reckless operative to a cold case on the off-chance she'll either discover something new or get herself killed, justifying him in re-opening the case under the guise of investigating ''her'' death ("The only way I can lose is if she manages to do nothing. And considering Miss Snipsís history, I find that possibility to be the least likely of them all."), and [[spoiler: carrying an antidote for every poison imaginable on his person at all times, 'just in case'--including antidotes for at least one poison that's listed as incurable.]]
* TheCoronerDothProtestTooMuch: When the assassin is questioned as to how all his competitors died, his response is 'Cancer'. When asked precisely how cancer could decapitate someone, his response is: 'Very ''dire'' cancer'.
* ForScience: Pretty much everything the Daffodils do is to this end (although they apparently also have a very healthy appetite for destruction).
* IfYouEverDoAnythingToHurtHer...: Williams granny to Arcadia.
* InWhichATropeIsDescribed
* MadScientist: The entire Daffodil family--except William Daffodil.
* ReluctantMadScientist: William Daffodil, who is terrified of his family's proclivities for mad science--and has instead dedicated himself to the far safer pursuit of 'mad mathematics'.
* TricksterArchetype: In some respects, Arcadia Snips.
* WellIntentionedExtremist: Pretty much all the major villains (including [[spoiler: Nigel initially, then later Mr. Peabody and the Society for Distinguished Gentlemen.]]
* WritersCannotDoMath: Driven home several times by a variety of impossibilities, although the author seems aware of this shortfall (William Daffodil's various feats of 'reckless mathematics' include such tidbits as dividing by zero, dividing zero by zero, and then subtracting by cat and multiplying by dog--just for kicks). Perhaps ''most'' evident in the notion of Probability Engines--engines capable of calculating mathematics so complex that they can predict the future. Which, by the way the novel explains them, is very bunk.