A sleazy private detective named Horatio Plugg is hired to keep watch over a brothel. Inspector Closer is onto him though.

A young girl who has just spent an afternoon playing tennis and making love with a man, gets accidentally run off the road by a truck. Ending up on a dead-end dirt road, her car gets stuck in a ditch, where she starts getting terrorized by a drooling, gibbering psycho, who also has a colony of rats.

Pretty singer/actress Marie Coleby has a charmed,affluent life in Sydney. She lives alone in a beach-side mansion with her dog and doting neighbour, old Billy Shepherd helps her out from time to time. The bearded Gordon Mason is her gardener. He is a psycho,who enjoys lying in bed with a mannequin and dreaming about torturing women on the beach. His obsession with Marie leads to rape and murder. A new resident enters the house of murder. Marie's older sister Jenny Nolan is looking for her...
"Lady Stay Dead" is a sleazy psycho slasher comparable to "Maniac", "Don't Go in the House", "Never Pick Up a Stranger" or "American Nightmatre". There is plenty of sleaze and full-frontal nudity as well as some brutal violence. Chard Hayward is perfect as a appropriately perverted and crazed murderer.