I balk, want to shout at him we can't fly, only to find myself heaved over the side to land with a clatter on a rusting fire escape. The dog comes at me as if he too has been thrown, landing hard on my chest. I grasp for him, hold him tight to keep him safe. The railing behind me is missing, fallen away, a large gap below me. Beckett lands beside me as the metal groans under our weight.

It's a very long way down.

"Go," he snaps, grabbing the dog from my arms. I secure ...