Screw

The prison officers at Long Marsh are set on making a fresh start, but Leigh hears a dangerous rumour about an undercover police officer on C Wing, The new governor orders Leigh to shut the operation down or the future of C Wing will be in jeopardy.

Leigh begins to doubt her team's loyalties when she discovers the identity of the undercover police officer. Meanwhile, Rose worries about her safety when it turns out that new arrival and double murderer Tyler Reeks has links to fellow prisoner Louis.