Get hooked on a gasp-inducing locked room thriller that readers don’t want to leave, from the million-copy bestselling author **Pre-order Profile K now – the new thriller from Helen Fields, publishing April 2024** ‘Deliciously dark and utterly compelling – I couldn’t put it down.’ – CLARE MACKINTOSH They’re locked up for your safety. Now, you’re locked in with them. How do you find a murderer in a prison full of killers? On a locked ward in the world’s highest-security prison hospital, a scream shatters the night. A nurse has been murdered and her daughter has been taken. And with only five days to find the girl, the clock is ticking for Dr Connie Woolwine to find a killer hiding in plain sight… Welcome to The Institution. The locked room thriller readers don´t want to leave.