Angela O'Neill

A little girl's brother kills the whole family but her (she escapes by hiding in the basement). He is committed, and she grows up with a new family, eventually going to college, where she joins a sorority. Due to a memory block, she doesn't remember that the sorority house was her childhood house. Her brother senses her presence in the house and escapes so he can finish the job he was unable to complete. (imdb)

A couple of young scientists, Mel Noble and Roxeanne Tangent, travel to an island in Africa thought to be deserted in search of crocodile life, when African Natives storm the camp and kidnap Roxeanne. Her father, Gordon hires Steiger and his team of investigators to track down the natives that worship crocodiles as sacred animals... (imdb)

A contract killer is hired to track down a man who's killing CIA agents.