Following his discovery, Andy has a decision to make. A fatal error at work backs Ally into a corner - does she protect her identity or fall further into the lie?

Cath finds herself falling for Andy and wonders how can she keep hold of the perfect man when she is living a lie. An encounter with someone from her past threatens to expose her secret.

Ally's personal and professional life begins to fall apart. Karl heads up to Edinburgh, desperate to take Molly back to Sheffield. Will Ally stop him before it is too late?

Driven to desperate measures, nurse Cath Hardacre assumes the identity of her best friend, an A&E doctor, and finds work in a struggling emergency department.

When Jamie McCain arrives on the spinal unit, he’s angry, uncooperative and refuses to talk about his injury. But what really happened to Jamie, and is he a man we can trust?

Jamie continues to disrupt the unit with his recurring night terrors. As he searches obsessively for the truth, his behaviour becomes increasingly erratic. Is the threat real or imagined?

Jamie's life hangs in the balance, and it remains to be seen whether Zoe can save him or if she is the one who puts his life in danger.

Jamie faces up to his past, whilst his investigation drags the staff into their own unnerving nightmares.