An Impossible Impostor

London, 1889.

Natural historian Veronica Speedwell and her partner Stoker are drawn into Special Branch business when Sir Hugo Montgomerie asks a personal favor on behalf of his goddaughter, Euphemia Hathaway: determine whether the amnesiac man who has arrived at Hathaway Hall is truly her long-lost brother Jonathan — presumed dead in the eruption of Krakatoa years before — or an impostor angling for the family's priceless Rajasthani jewels.

As Veronica investigates undercover, she comes face to face with a ghost from her own past, forcing her to confront secrets she thought long buried while she and Stoker race to uncover the truth behind the impossible impostor.