So, after the total CLUSTERFUCK of the previous case, Thomas has a new boss, Micah Drummond, who is really awesome. Thomas is investigating the death of a member of Parliament whose throat was slashed while he was walking across the bridge away from the Parliament building. Then the killer tied him by his neck scarf to a lamppost and left him there to be discovered by a soliciting prostitute. As you do.
Also, Charlotte's interested in women getting the right to vote, which at this point was still highly debatable. Because why would women want to vote? It would overheat their tiny brains and besides men need to lead them around by the hand and treat them like toddlers. (Needless to say, suck it.)
Thomas looks into the first guy (yeah, first guy, there will be more), Barclay Hamilton, who was married to a woman named Amethyst (whose parents apparently didn't care about being even remotely normal). Amethyst has two brothers named Jasper and Garnet because, again, WHY NOT NAME YOUR KIDS AFTER PRETTY THINGS, SHUT UP. Barclay had a son by his first marriage (Amethyst is his second wife), and, uh, Amethyst and her stepson are in love. So, yeah.
The next one is something Carfax, and everyone's freaking out. ANARCHISTS! MAYBE? But the anarchists are like "we have important explodey things to do in Ireland so whatev, no throat-slitting for us."
Then Zenobia Gunne approaches Great-Aunt Vespasia and says her niece Africa (yep, she's white) is roommates with (also in love with maybe?) Florence Ivory, who had a hell of a motive to kill Carfax (I think it was Carfax?). Florence left her asshole husband and took her daughter with her, but the husband decided to be a dick and demanded full custody of the daughter, citing Florence's work to get women the vote as proof she was an unstable, dangerous lady. Florence went to an MP who promised to help, and then knuckled under when the asshole husband sent him a few letters. Dick.
But Zenobia wants to clear Florence, so Charlotte gets involved. Charlotte likes Amethyst a lot, and she's kind of freaked out by Florence, because Florence is like on fire with rage over having lost her child. (I mean, who wouldn't be?) Zenobia knew Mary Carfax, the Carfax widow, and they hate each other, but she renews the acquaintance.
Then a third guy is killed, and everyone's flipping the fuck out.
Eventually, through a shit ton of police work (which earns him a promotion), Thomas figures out that a flower seller is likely responsible. Garnet volunteers to be bait by crossing the bridge at night, and the murderous flower seller approaches with a straight razor! Pitt smacks her on the arm with his truncheon but Garnet shoots her ass STONE DEAD and hooray, she's caught! Garnet says "Oh yeah, she was my wife's maid and she was so fucking overcome with grief when my wife died of scarlet fever that I just dropped her off at the insane asylum so she could get right again." Like 15 years ago.
So Thomas eventually figures out that Garnet's wife DIDN'T die of scarlet fever. She became involved in some stupid Christian cult and Garnet was like "fuck no you don't" and his wife Naomi was like "fuck yes I DO YOU DON'T TELL ME WHAT TO DO" and fucking STARVED HERSELF TO DEATH when her husband refused to let her out of her room until she basically recanted. He finds letters basically filling that in.
So Charlotte, wanting to start some shit, took the letters to Garnet, basically a fuck-you of "now you know I know," and after he basically tells her to fuck off, he comes out and tries to push her into the Thames! And she basically ducks and he dies like an evil movie villain!
And Thomas refuses his promotion because he enjoys his job and wants to be doing it, but he only does that after Charlotte tells him to because she loves him and knows how he is.
So, yeah. Um, I had some questions. The identity of the killer doesn't quite make a ton of sense. Why did she tie them up by their scarves, just to be a dick? What about the mistaken identity? She wanted to kill Garnet, so the other three were apparently just practice or accidents.