The Mystery of Lake Lethe

A multimillionaire is murdered, and his will leaves all his money to a beautiful young blonde. The murdered man's son thinks something is fishy, and a homicide cop sets out to find out who was behind the man's death. Complications ensue.

After finding her sister dead, Maria tries to find out who or what is to blame.

Allayne Norman's husband Bruce is a gambler and drunkard who kills her artist cousin in an argument. Bruce flees the studio with Allayne and their son, and places his identifying documents in the pockets of an amnesiac man. To avoid the consequences of his actions, Allayne identifies the man as her husband. When Bruce returns, he tries to kill the man but is shot instead. The man regains his memory and is cleared of wrongdoing.

A man assists a woman to dispose of the body of her stepfather....

A woman's cheating husband is murdered at their country estate, and suspicion immediately falls on her.

After coming under suspicion for a computer technician's murder, six hackers team up to try to find the real killer.

Mystery film in the detective Stuart Webbs series.

Holmes goes on the trail of a Rembrandt painting, stolen by a drug-addicted artist.

After a popular singer dies in a mysterious auto accident, her fiancee assembles all those who were to attend there wedding, hoping to find her killer.

A young nurse reports to work in a hospital's psychiatric wing and gets involved in a series of mysterious deaths.

The wife of a TV executive thinks she might have committed a murder and is tormented by a stalker while locked inside an empty TV station.

A mystery writer's son is being held for $1 million ransom.

This silent mystery is considered a lost film.

A doctor who cannot figure out what is wrong with his patient refers him to a detective, whom he hopes will be able to discern the cause of his mysterious illness.

Much-married and once successful writer Henry T. Aythecliff, now heavily in debt, summons his three ex-wives to his mansion, planning to extort a sizable amount of money from each. When he is discovered dead, clues indicate that each of his four wives had motive and opportunity to murder him, and a young detective must sift through some ingeniously devised evidence.

A murdering skyjacker parachutes to safety and poses as a novice monk in an isolated New Mexico monastery.

Chaney plays two roles: mad scientist Arthur Lamb and Lamb's "experiment", known only as the Ape Man. This hideous creature was the result of Lamb's attempts to transplant animal glands into human beings. A lost film.

An operator at a mobile pager company has her life turned upside down by a seemingly senseless abduction. Currently considered to be a lost film (never released to the general public, after its theatrical premiere in Puerto Rico).

Sentenced to be deported from Hawaii, Hung Chin Chung pledges twenty years of service to Henry Drew to escape the certain death that awaits him in China. Rage at his humiliation and inability to marry as a free man smolders in him throughout his servitude, near the end of which he sails to San Francisco with the Drew family. Also on board is Ralph Coolidge, who tries to retrieve from Drew his share of their gold mine, and who loves Drew's secretary, Mary-Will Tellfair. Shortly after their arrival, Henry Drew is murdered; suspicion falls on Ralph, the owner of the murder weapon, a curious Chinese dagger; but subsequent events lead Hung Chin Chung to confess to the crime.

A poor man refrains from proposing to the woman he loves until he can secure the fortune left him by his uncle. Believing the treasure awaits in his uncle's abandoned mansion, he begins searching... only to uncover mystery, murder, and a killer ape.