Blue Lights

PSNI probationer Grace promises to help Angela, whose son has fallen in with a notorious gang. However, undercover agents are watching.

The team scramble to deal with a bad batch of drugs; the McIntyres try to cover their tracks; Annie receives terrifying news that has her wondering who she can trust.

A paramilitary-style assault case has Grace determined to bring the McIntyres to their knees; after Gordy pulls away from Angela, she becomes desperate for help.

The police ombudsman investigates the team after a disastrous night shift; Helen uncovers a scandal; a crisis at home has Grace doubting her career choice.

Mo's side deal goes ahead, risking his relationship with his father; Tommy's firearms exam is brought forward; Stevie tries to convince Grace to come back to work.

The team work together after the shooting; Stevie clashes with the spooks; Mo learns the truth about his father; Grace accepts that she might break her promise to Angela.