Bad Love: Part 1 (S24E03)

When a swimming instructor is found murdered in her flat, trace evidence from the scene identifies two suspects, including the victim’s ex-boyfriend, a former police officer. It’s the first case for new recruit Adam, and his eagerness to impress causes friction in the team. As the investigation uncovers a tragic story about the need for love and family, Jack is confronted with secrets from his own hidden past. (BBC iPlayer)