BOTTOM LINE: One of the best of this long series IMO, as we get to meet two people who are going to become very close to Phryne in the future - Jane and Ruth. Their introduction might have been pure melodrama, but Greenwood only very slowly spins out their odd stories, which resolve in a rather grisly - albeit satisfactory - manner.
Almost as contrived as an Edgar Wallace or Sax Rohmer tale, but with Greenwood's nicely light touch the plot just flows along and as long as you can manage to take the odd proceedings with a grain of salt and just enjoy the fun bits, I think you'll find this is a very entertaining story; it also is very moving in many spots, but more on that later. As for the melodrama, let's see, there's chloroform (an entire first-class carriage on a train), a 12-YO girl with loss of memory (and a lot of fear), a missing teenager from a wealthy family willing to spare no expense, music-hall performers, white-slavery, murder-for-profit, a dowdy young woman and her entirely obnoxious mother, a rowing team AND a glee-club, a couple of wild parties, and another lost (but poor) girl. And I haven't even mentioned Phryne's creepy friend Kyra, or the nasty hypnotist, or the attack cat...
There are several quite pathetic parts to the story, as the circumstances around the girls (both those lost, and those found) are described, and as we come to know a couple of them rather well. But there's great satisfaction to be had in the ending (even though one part of it is highly improbable). And a nicely rip-roaring fight scene at the end too, so even though it sounds here as though the story is overloaded and far too melodramatic, "trust me..." - it's all beautifully done, smoothly written, and nicely tied-up at the end. Of course, if you don't happen to *like* mostly (but not entirely) Happy Endings, this pretty much ain't the series for you for, despite the dark themes that abound in the books, most of the endings do manage to have happy - or at least satisfying - bits to them. A difficult, but nicely done, balancing act by the very sly - and extremely talented - Ms. Greenwood.