Katherine Heigl appeared in a series that was written, in part, by Jason Katims.
Isabel Evans is a fictional character created by Melinda Metz for the young adults book series Roswell High and adapted by Jason Katims for the 1999-2002 American science fiction television series Roswell . Katherine Heigl . From 1999 to 2002 , Heigl co-starred as Isabel Evans on the television series Roswell . Roswell is an American science fiction television series developed , produced , and co-written by Jason Katims .