Once Upon a Frightmare was released in the year 1974。Once Upon a Frightmare is also called as Frightmare, Terror sin habla, Smak på människokött, Nero criminale - le belve sono tra noi, Frightmare II, Cover Up。

Edmund and Dorothy Yates are freed after fifteen years in an asylum. Edmund covers up for his wife who is a murderer and a cannibal and Dorothy's daughter Debbie and stepdaughter Jackie, who live apart from them, may or may not have inherited her appetites. Dorothy has started to kill again...