Law & Order: UK

A suicidal man kills several people when he causes a catastrophic train crash. Jake isn’t happy about Alesha’s replacement, and shocking news raises a few questions.

Sam is suspended, putting him on a self-destructive path. Ronnie reaches out to his estranged daughter. Jake gets to know his new sidekick, the feisty Kate Barker.

When Ronnie and Sam discover that a murdered man owed his ex-wife thousands in child support for their dying son, the boy’s grandfather becomes the main suspect.

The body of a wealthy woman is pulled from the river. After ruling out suicide, Ronnie and Sam focus their inquiries on the victim’s abusive ex-husband.

Following the suspicious death of an old woman, Ronnie and Sam are led to believe that her caregiver was to blame. The caregiver accuses the old woman’s granddaughter.

An adoptive, homosexual father is found beaten to death, and his two-year-old son is missing. The clock is ticking for Sam and Ronnie as they go in search of the boy.