Nora buys a used book which turns out to be a rare first-edition. The book was sold by mistake and the thieves who stole the book in the first place are intent on recovering the volume.
Blondie Collins (Nita Talbot) returns, having escaped from prison. Nick and Nora hit a triple: exposing a drug ring, putting a bookie ring out of business, and getting rid of Blondie - or did they?
Nora witnesses a murder. The killer, an actor who is a master of disguise, visits Nora in a number of different impersonations to see if she can recognize him.
Barney once saved Nick's life. Now gangsters are after him and he wants Nick to hide him out. Things would be fine if Nora hadn't mistaken Barney's list of suspects for Nick's guest list for their housewarming.