In Unforgotten Season 1, Episode 2, DCI Cassie Stuart and DS Sunny Khan investigate the death of Jimmy Sullivan, focusing on suspects who have rewritten their pasts to hide secrets from 1976. The episode reveals a pattern of lies from key figures, including Sir Philip Cross and Lizzie Wilton, while forensics suggests a violent gangland murder. Read a detailed recap at WTTW Chicago . 'Unforgotten' Season 1 Episode 2 Recap | WTTW Chicago