“Killer Cheer,” an Investigation Discovery (ID) channel reality series, is set to premiere on Monday, March 13 at 10 p.m. EST. The new series will air back-to-back with “Mean Girl Murders ...

TV & Movies What TV channel is Investigation Discovery on? How to watch true crime series on ID Network streaming free online Updated: Oct. 23, 2023, 4:57 p.m. | Published: Jan. 15, 2023, 5:07 p.m.