Mindless of the grazes I picked up, I eased my way through the gap and clambered upright on another joist. Then I loped through the attic, jumping from one joist to the next as I tried to recall what the building looked like from outside. I’d watched it for long enough from my limestone perch in the swamp, but now when my mind was working on overtime I could only dredge up an impression of a large mainly brick structure of three floors with a crenellated balustrade around a peaked roof. As I hurried after Rickard, more details came to me. Chimney stacks stretched into the sky in at least four different locations along the length of the rooftop. I also recalled that at the back of the building more recent extensions had been added, with two annexed wings erected at right angles to the main structure. These wings stood two stories tall, with sloping roofs abutting the back wall. It was a feasible escape route for Rickard to drop on to one of those roofs, then from there to the ground below. Maybe there was even a fire escape, but I couldn’t remember.

Arriving at the exit hole, I found that Rickard had smashed loose the tiles and wooden slats and had slashed a hole through an asphalt inner lining. The hole was barely large enough for my head and shoulders. I was risking things by looking outside. I couldn’t hear where Rickard was; he could be standing a couple of feet away for all I knew, waiting for my head to pop out like a target in a shooting gallery.

I had to go after him—nothing else for it.

Positioning myself next to the hole, I quickly lunged out, looking one way then the other. He could be above me, up toward the peak of the roof, and I twisted to get a look. No sign of him. The fact that my head didn’t explode was a good thing too, meaning he was more concerned with escaping than finishing things between us. I clattered through the hole, dislodging more tiles, which slid to the edge of the balustrade. I followed them, sliding on my backside, using my boot heels as brakes to halt me from pitching over the low wall and to the ground. From up here it looked a lot more than three stories high.

We had come out on the roof toward the back left corner of the hospital and there was a chimney stack thirty feet to my left—another, twenty feet to my right. Rickard had to be hiding behind one of them; I just wasn’t sure which one. I chose to go right because the one on the left was too near to the side of the building. From below Rickard would be exposed to fire from the FBI men on the grounds.