When reporter Hattie Foster seeks out Detective Blake Wayman to help solve her sister's murder, she has no idea that his investigation will involve talking to the only witness to the crime... her dead sister, who holds the clue to an even darker mystery than her own demise...

Blake and Hattie's investigation into the Black Rose leads them to a suspicious psychoanalyst named Olaf Bender - whose powers of mentalism are more than the P.I. and reporter expect, on both sides of the River...

While True and Hattie search for a clue in the aftermath of their dealings with Olaf Bender, True tells Hattie the story of how Blake first crossed the River, and what he lost to get there...

With the Black Rose's countdown to midnight ticking, Blake tracks down a murdered chauffeur who may hold the secret to the identity of the secret society's leader, which leads him to an Underworld club owned by a mysterious singer named Lorelei...

After the ambush at Scylla on the Rocks, Styx Detective Agency must find ways to protect themselves from The Black Rose up top, while Blake and Hattie pursue a lead on one of the society's operatives, a woman named Rada Nadezhda, who knows about Underworld City... and perhaps someone there Blake has long searched for...

Blake reunites with Elise in the Underworld to chase down the lead on Professor Kirk, taking them to a hotel where souls check in, only to disappear, while up top, Hattie finds the Gypsy's warning might be more real - and deadly - than she first believed...

In the aftermath of the Black Rose's attack on Styx Detective Agency and the revelation in the wine cellar of the Grand Acheron Hotel, Blake teeters on the edge of surrender, until an unusual client sends him on an unexpected case...