October 21st
- 1772 – Samuel Taylor Coleridge was born.
- 1936 – Jack Taylor was born.
- 1936 – The Thing That Crept first aired on the radio.
- 1959 – A Bucket of Blood went to theaters.
- 1965 – Happy 100th Anniversary first aired on television.
- 1966 – Dark Shadows, Episode 85 first aired on television.
- 1972 – Adrian Ludens was born.
- 1978 – The Creepy Case of Old Iron Face first aired on television.
- 1983 – The Dead Zone went to theaters.
- 1988 – Halloween 4: The Return of Michael Myers went to theaters.
- 1990 – Cellmates first aired on television.
- 2009 – Janet Fox died, age 68.
- 2011 – Paranormal Activity 3 went to theaters.
- 2011 – Shut Up, Dr. Phil first aired on television.