Psycho is written by Robert Bloch
[Human]: What do you know about  Psycho? [Assistant]: It was written by Robert Bloch and Joseph Stefano and was also a movie. Sometimes it's referred to as a slasher book. do you like those? [Human]: I am. Who starred in the movie? [Assistant]: Janet Leigh was in the famous shower scene. Alfred Hitchcock, who directed it, also had a part.  [Human]: Is still around ? What has he done lately? 
No, he passed away years ago. But he was known for his horror films. One that really scared me was The Birds. 