"Anything physical would have to be detectable," Methos replied. And then, after a few seconds' pause admitted ruefully, "Assuming we knew what to look for. I doubt they're kind enough to leave it at anything so obvious as guard towers."

He sat back on his heels and raked a hand through his hair, ruffling it up into porcupine-like spikes. "The information in the file rooms may still be useful. If they've got the current patient records in there, we'd at least be aware of what they want us to think they know."

He got to his feet, noiselessly this time, and bent down to pull one of the stretchers free. "I'm not sure. They're too packed in to get a good look. Probably springs and crossbars to support the weight..." It came free with a quiet creak that made him wince and look back at the broken-in door for incoming creatures.