The Serial Killer's Apprentice - Katherine Ramsland

Ullman, Tracy: - Tracy Ullman is a documentary producer, director, and writer living in Chicago. She has produced dozens of non-fiction television programs for Discovery Networks, Oxygen, AETN Networks, and PBS. Her most recent production is a six-part limited documentary series about serial murderer John Wayne Gacy and the new discoveries made in his case for NBC's Peacock streaming service.