ZONE 7 with Sheryl ‘Mac’ McCollumCSI Sheryl McCollum welcomes back Dr. Katherine Ramsland and Tracy Ullman to discuss the release of their documentary, The Serial Killer’s Apprentice. This two-hour film revisits the chilling case of Elmer Wayne Henley Jr. and Dean Corll, blending archival footage, exclusive interviews, and rare audio recordings. About the GuestsDr. Katherine Ramsland is a professor of forensic psychology at DeSales University and the author of numerous books and articles. She co-authored “The Serial Killer’s Apprentice” with Dr. Katherine Ramsland and has conducted research into John Wayne Gacy and sex trafficking networks. She also served as an executive producer on The Serial Killer’s Apprentice documentary, helping bring new perspective to the story of Elmer Wayne Henley Jr. And Dean Corll.