48 The surveillance room in the security suite at St Mary’s Hospital was small, barely big enough to hold the two chairs occupied by the guard who had the duty of watching the bank of monitors that took up most of the space and by DI Harrison. There certainly wasn’t enough room for either of them to move out of the way, which meant Harrison had to lean across the guard, who was reluctantly sharing his space, to see the image on the middle left monitor better. “All stations, heads up, we have a possible suspect in the East stairwell, heading up from the ground floor,” Harrison alerted the officers he had been given for that night’s operation. “Suspect appears to be between five-eight and six feet tall and medium build, wearing dark clothes, including a balaclava or similar. “Can you foll

