The Mysterious Mr. Wong (1935)

After two British Secret Intelligence Service agents are murdered at the hands of a cryptic neo-Nazi group known as Phoenix, the suave agent Quiller is sent to Berlin to investigate.

Young socialite Iris Carr befriends an older woman while traveling solo by train. When Iris wakes from a nap, the woman is gone and other passengers claim she never existed.

When hired killer John Gant rides into Lordsburg, the town's folk become paranoid as each leading citizen has enemies capable of using the services of a professional killer for personal revenge.

On a trip to visit his parents, detective Nick Charles gets mixed up in a murder investigation.

Federal agent Alexandra Barnes believes that Catherine Petersen is a serial killer who marries rich men and then murders them for their money. But since Catherine is seemingly a master of disguise and has multiple identities, Alexandra can't prove anything with conventional detective work. With no other option, she goes undercover, pursuing the same man as Catherine, and hoping that Catherine will slip up and reveal her true identity.

Society sleuths Nick and Nora Charles investigate a murder in a jazz club.

Internet sensation and old family friend of Aurora Teagarden, Poppy Wilson, has returned to Lawrenceton to start her new embroidery business. But not everyone is happy with Poppy's success when she turns up dead. To find the killer, Roe must follow the unsettling truths that lead her—into the path of the killer.

A troubled young woman becomes obsessed with her mysterious new neighbor, who bears a striking resemblance to the girl's dead mother.

Charles Dobbs is a British secret agent investigating the apparent suicide of Foreign Office official Samuel Fennan. Dobbs suspects that Fennan's wife, Elsa, a survivor of a Nazi Germany extermination camp, might have some clues, but other officials want Dobbs to drop the case. So Dobbs hires a retiring inspector, Mendel, to quietly make inquiries. Dobbs isn't at all sure as there are a number of anomalies that simply can't be explained away. Dobbs is also having trouble at home with his errant wife, whom he very much loves, having frequent affairs. He's also pleased to see an old friend, Dieter Frey, who he recruited after the war. With the assistance of a colleague and a retired policeman, Dobbs tries to piece together just who is the spy and who in fact assassinated Fennan.

High society sleuths Nick and Nora Charles run into a variety of shady characters while investigating a race-track murder.