Lost.

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.

A woman wakes up in the middle of the night on board a train, but she can't remember how she got there. Danger and suspense ensue.

Twenty years after the disappearance of her daughter, a recovering alcoholic is preparing to host her family's Christmas celebration when her estranged ex-brother-in-law arrives unannounced, bearing nostalgic gifts and a heavy secret.

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.

A member of British Intelligence assumes a fictitious criminal identity and allows himself to be caught, imprisoned, and freed in order to infiltrate a spy organization and expose a traitor; only, someone finds him out and exposes him to the gang...

After learning that the death of his wife was not an accident, a former CIA Station Chief is forced back into the espionage underworld, teaming up with an adversary to unravel a conspiracy that challenges everything he thought he knew.

A malevolent being known as The Jester terrorizes the inhabitants of a small town on Halloween night, including two estranged sisters who must come together to find a way to defeat this evil entity.

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.