Janet Dale feels that there is a danger looming over her home but cannot put her finger on what it is. Days later her father disappears at her 18th birthday party; dematerializing into thin air before her eyes. She sets out to find him and grapples wit mobsters, psychics, murder, and family secrets.

Adventures of an American Secret Service-girl in search of an important German secret during the war. Chapters: [1] “The Great Secret,”; [2] “Marked for Death,”; [3] “The Gas Chamber,”; [4] “Below the Waterline,”; [5] “The Acid Bath,”; [6] “The Unknown,”; [7] “The Betrayal,”; [8] “A Crippled Hand,”; [9] “Woes of Deceit,”; [10] “The Inn of Dread,”; [11] “The Death Studio,”; [12] “The Chance Trail,"; [13] “Wings of Mystery,”; [14] “The Hidden Way,”; [15] “The Secret Host"

The widowed elderly mother of three adult children, two sons and a daughter, wishing to relieve herself of the burden of care of her property, decides to divide it up among her children. To her son Charles, a wild but kind young fellow, she leaves a small amount, feeling that he will soon run through it. The good-hearted boy is perfectly satisfied, believing in the wisdom of his mother's actions. He assumes she will find a home with one of his siblings, who are married and settled. The old woman moves in with her married son, but is driven out by his wife over an argument about her young granddaughter. She is forced to move into a squalid apartment in a cheap tenement house, but is evicted for failing to pay her rent. Mack Sennett appears as a bartender in this film.

Patricia O'Rourke, a good-natured prankster who works as a copy girl for the Sentinel , angers her co-worker Stubbs and is about to lose her job when the managing editor offers her one more chance. Her assignment is to explain the clue that links the Hope Mission, a derelict home run by millionaire Hunter Mason and his secretary, Monty Latham, with a series of local robberies. When Hunter discovers Patricia in his office, he assumes that she is a crook in need of reforming and takes her into his home to be cared for by his mother.....

In a saloon in a Mexican border town, a group of cowboys, including a Mexican named Pedro, play poker. One man is discovered cheating, and is shot dead by Pedro, who is wounded as he attempts to escape. Pedro is followed home by the local sheriff, who proves the next victim of Pedro's quick temper and pistol. Pedro's wife, Juanita, is thrown into jail, but he manages to break her out. They head for the border, unaware that a posse is waiting for them.

When jealousy and envy lead Mary Vantyne to make a foolish decision and commit an impulsive act she sets off a series of events that nearly bring heartbreak to all those in her circle.