London Kills (2019)

S3E4 Control Freak

The discovery of a body in a suitcase leads to the identification of a man who has been missing for two weeks. When the team breaks the news to his widow, Cassidy, she appears unfazed and accuses her brother-in-law, Charlie. In response, Charlie argues that Cassidy is a manipulative person and suggests that his brother intended to escape their marriage. Is Cassidy merely emotionally distant or could she be involved in a more sinister act? At the same time, David is pressing Mulgrew to disclose what he knows about the case.