Bill Callahan (b. 1971) is a writer of the series Psych.
Callahan is an American writer who has previously written episodes of Spin City, 8 Simple Rules... for Dating My Teenage Daughter, and Scrubs.
- "The Devil's in the Details ... And in the Upstairs Bedroom"
- "Shawn Has the Yips"
- "Death Is in the Air"
Community content is available under CC-BY-SA unless otherwise noted.