From The Perry Mason TV Show Book
Ventriloquist Paul Winchell stars in this episode concerning a woman who killed her husband during an argument, only to hit her head in the struggle and lose her memory. She then disappeared, but Paul tracks her down at the request of her family. He finds her in a rest home. So do the police, and she is charged with the homicide.
Although Perry gets her freed from the charge, the trouble continues when her son is charged with killing a fellow worker who was behind an embezzlement scheme.