The Fast Mail's Danger

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.

When a store clerk organizes a contest to climb the outside of a tall building, circumstances force him to make the perilous climb himself.

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.

When a stranger enters a quiet, country town and is seduced by a sensuous married woman he unwittingly finds himself at the centre of a storm of sexual guilt and murder.

A man convicted of murdering his wife escapes from prison and works with a woman to try and prove his innocence.

An innocent man turns fugitive as he reconstructs events that implicate him for a murder and robbery he did not commit.

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.

Loner Mark Lewis works at a film studio during the day and, at night, takes racy photographs of women. Also he's making a documentary on fear, which involves recording the reactions of victims as he murders them. He befriends Helen, the daughter of the family living in the apartment below his, and he tells her vaguely about the movie he is making.

Unhappily married Richard Mason concocts a meticulous scheme to kill his shrewish wife so that he'll be free to marry her sister.

On a train headed for England a group of travelers is delayed by an avalanche. Holed up in a hotel in a fictional European country, young Iris befriends elderly Miss Froy. When the train resumes, Iris suffers a bout of unconsciousness and wakes to find the old woman has disappeared. The other passengers ominously deny Miss Froy ever existed, so Iris begins to investigate with another traveler and, as the pair sleuth, romantic sparks fly.

In sleepy Santa Rosa, restless young Charlie’s world brightens when her sophisticated Uncle Charlie arrives for a long visit. But as his behavior grows increasingly strange, she begins to suspect that her beloved uncle may be hiding a terrible secret—and that danger has quietly entered her home.

Nancy becomes increasingly convinced she was kidnapped as a child. When she meets a couple whose daughter went missing thirty years ago, reasonable doubts give way to willful belief.