Ellen, a successful astronomer, cares for her mentally-ill sister, Cissy, who keeps a variety of primates in the home they inherited from their anthropologist father. When Ellen begins a romance, Cissy's jealousy proves deadly.
Directed byKaren Arthur
Written byDon Chastain, Cottrell Richard, Éric Wesphal
CountryUnited States
Runtime102 min
On screen
Lee Grant
Carol Kane
Will Geer