Valentine and Hunter arrest a drink driver caught at the wheel of his car, only to discover that he is one of Meadows' former prisoners who absconded from police custody two years previously. Whilst in custody, the suspect is taken ill with a possible virus and sent to St. Hugh's. Hemmingway guides a uniform team to take control of a minor protest outside the hospital, but an unknown man riles them into a riot, with his ulterior motive revealed; he and his brother are sons of the escaped con and are planning to take him out of the hospital. As Harman encounters one of the brothers, she finds herself held at gunpoint.
