His name probably doesn't ring a bell. To be honest, it didn't for me either, but his credits definitely will.

In 1960, writer and composer Joseph Stefano was called upon by Alfred Hitchcock to take a novel by Robert Bloch and adapt it for the screen.  The result was Psycho. The book begins with Marion Crane arriving at the Bates Motel and immediately being murdered.  Stefano believed the character needed some backstory to make her more sympathetic and make her death more important to the audience. 

Later in the 60s, Stefano teamed with screenwriter Leslie Stevens to create and write The Outer Limits.  Stefano also wrote for The New Outer Limits.

He wrote several television movies and for various television series including Start Trek: The Next Generation.