Groom-to-be Mitchell MacDonald is fatally attacked in an alleyway on his stag night, suspicion falls upon his troublesome future stepson Will Holt (18), who went missing after the attack, has disappeared without trace. Video footage confirms doubts about the testimony of Will's father Jacob Holt, a former acquaintance of DI Bradford. When Will finally resurfaces with a near-amnesiac hangover, he confesses having killed Mitchell, as his daughter Tamsin claimed that Mitchell was a non-prosecuted pedophile, who never informed the bride, Jacob's ex Helen Holt, having left Scotland and his career as deputy school principal for a temp job in London insurance. Forensic however suggest Will didn't do it, Helen confides Jacob isn't his biological father. Trainee constable Billie meets up for a drink after work with witness Amber Saunders (episode 1), sharing a steamy kiss.
—KGF Vissers