A scientist attempts to transplant a gorilla's brain into a man.

Upon being released from prison, Lawrence Hilliard takes the name of John Smith and looks for work, and falls in love with Irene Mason, a social secretary, but is reluctant to tell her about his past.

Aimee is a young girl betrothed to a rascal, Hamid Bey. An American archeologist, Jack Ryder, arrives to help the girl escape ending up in Bey's harem, but it takes the boy ten episodes to finally succeed.

The world's finest ruby was stolen from the bride of Prince Kassim's great-grandfather several generations ago in India by a marauding rajah. It's now several decades later and the British have conquered India, and one day the ruby shows up for sale by a wealthy London jeweler, Sir John Garnett. Garnett has his own problems--there have been a rash of thefts of his wife's jewels, and he hires a private detective named James Brett to investigate.

The 15 chapter story involves the heroine being protected by a shadow with burning eyes. There's also a cloak of invisibility, some hypnotism and a giant octopus added to the mix.

Wealthy capitalist, Clinton Reynolds, and his wife, Laura, have lost their son, Arthur, kidnapped and possibly dead. Attempting to write a wrong in his factory, he adopts the daughter of one of his workers who is killed on site. The girl, Rose, grows up resentful of her adoptive father and as she grows older, seduces him in order to break up his marriage. Long lost Arthur returns and, finding his parents' married life in disarray, becomes romantically involved with Rose in order to end the relationship she has forged with his father. Reynolds comes to his senses and makes amends with Laura, at which point Arthur leaves Rose.

The story of a girl who for months was in perpetual peril; on land, on sea, everywhere, Orient, Occident, and the Antipodes.

A story of violence, deceit, deception and malfeasance among the rich set and the hoodlums with whom they unknowingly become involved.

An innocent man goes to prison for obstruction of justice when his wife refuses to reveal that her father was killed by her mother (and it wasn't suicide). When he is finally released, he meets and becomes involved with a young woman who belongs to the town's influential elite. Once again, he finds himself caught up in intrigue - which eventually leads to his exposing the mayor of the town as corrupt.

Wealthy young sculptor Harold Harcourt has always used his wife Elena as his model and inspiration. But after a few years he aspires to create a magnificent work of art… a statue of "Youth," yet feels Elena lacks that indefinable "something," which spells Youth. Callously disregarding her feelings, he tells her she is too old turning to Ione whom he sees as the perfect model for his greatest work. As the inevitable follows Elena, broken-hearted, turns to former suitor Julian, who offers solace. Tempted to run away with Julian, she instead goes away alone leaving a note for her husband saying she trusts in him to save the situation. Conscience stricken, he smashes the work of art he has created to make amends and secure his wife's forgiveness.