Tracking down the man that she believes is responsible for the death of her son, Frances sets out to inveigle her way into his home as she plots her revenge. Struggling to deal with his PTSD, DI Strangeways’ takes a closer look at the investigation into Frances’ son’s death.

• Gaby Chiappe
• Nicholas Blake

• Mia Tomlinson
• Cush Jumbo
• Jared Harris