Investigation Discovery +1 Friday

A case from 1922 Los Angeles in which a wealthy man was shot dead in his home and his wife locked in a wardrobe. Detectives soon found the crime was not as it seemed

A case from 1970 in which an entire family was discovered shot and drowned in their own swimming pool in Santa Cruz, California

How a lunch break became a nightmare for two secretaries who vanished in broad daylight. One woman was found dead, launching a desperate search for her missing friend

A case in which an employee of an exotic wildlife park vanished. As the search for the missing woman intensified, investigators feared the predator responsible was not an animal

The murder of successful business owner MaryAnn Clibbery in Illinois. A suspicious bag floating on the ice in the river unlocked the secrets of her slaying

The case of Barbara Howe, who vanished from her retirement community in Ohio in 2015. The body of the 87-year-old was later found in the boot of a car