Screenwriter John Callahan
Chris Labonte, Steve French, Sean V. Jeffrey, John Callahan, Charles E. Bastien are some of the directors who have worked with John Callahan who is the person in charge of creating the script for exciting stories.
A screenwriter like John Callahan does very well in the following genres Comedy, Animation, TV series. Without a doubt, his great gifts as a screenwriter make us get involved in the films he writes.
