When Sam’s book publisher requires source material for her biography on Isaac, she and Jay take a field trip to find a diary he claims he hid when he was alive, on the CBS Original series GHOSTS, Thursday, Dec. 5 (8:31-9:01 PM, ET/PT) on the CBS Television Network, and streaming on Paramount+ (live and on demand for Paramount+ with SHOWTIME subscribers, or on demand for Paramount+ Essential subscribers the day after the episode airs)*.