DUBLIN’S HARMON PENITENTIARY IS EUROPE’S MOST DANGEROUS JAIL. DR. FRANK RYAN IS IN CHARGE OF LOOKING AFTER ITS INMATES. IT’S A RISKY JOB — THE LAST DOCTOR WAS MURDERED — BUT FOR RYAN IT’S ALSO AN EXCITING CHALLENGE. EARLY ONE MORNING, RYAN RECEIVES A PHONE CALL. IT’S THE JAIL. HE’S NEEDED RIGHT AWAY. KISSING HIS GIRLFRIEND LISA GOODBYE, HE LEAVES HIS HIGH-SECURITY APARTMENT AND WALKS STRAIGHT INTO AN AMBUSH. THIS MAY BE IT FOR RYAN. COMING TO, RYAN FINDS HIMSELF IN WHAT HE ASSUMES IS A HOSPITAL. BUT SOMETHING ISN’T RIGHT. WHY DOES HIS NURSE LOCK THE DOOR BEHIND HER AND WHY HASN’T LISA COME LOOKING FOR HIM? IS RYAN NOW A PRISONER? OVERWHELMED BY CONFUSING AND CONTRADICTORY EVIDENCE, FRANK RYAN’S INVESTIGATIONS LEAD HIM TO THE PENITENTIARY’S MOST SECURE SECTION, J WING, AND THE MYSTERIOUS INMATE INCARCERATED THERE…