But Chet was already out the door, digging Debbie Carr's purse from under the planter, then running, doubled over the bulge it made in his shirt, hunting for a private space in the anthill.

#

The entire north face of the bat-house was eyeless, a blind, windowless expanse of foam that seemed to curve as it approached infinity.

Some said it was an architectural error, others said it was part of the bat-house's heating scheme. Up in nosebleed country, on the 120th level, it was almost empty: sparsely populated by the very battiest bats, though as more and more humans were found batty, they pushed inexorably upwards.

Chet rode the lift to the 125th floor and walked casually to the end of the hallway. At this height, the hallways were bare foam, without the long-wear carpet and fake plants that adorned the low-altitude territories. He walked as calmly as he could to the very end of the northern hall, then hunkered down in the corner and spilled the purse.

Shit, but Debbie Carr was going girlie. The pile was all tampons and makeup and, ugh, a spare bra. A spare bra! I chuckled, and kept sorting. There were three pennies, enough to buy six chocolate bars in the black-market tuck-shop on the 75th floor. A clever little pair of folding scissors, their blades razor-sharp. I was using them to slit the lining of the purse when the door to 12525 opened, and the guy who thought he was Nicola Tesla emerged.

My palms slicked with guilty sweat, and the pile of Debbie's crap, set against the featureless foam corridor, seemed to scream its presence. I spun around, working my body into the corner, and held the little scissors like a dagger in my fist.

The guy who thought he was Nicola Tesla was clearly batty. He was wearing boxer-shorts and a tailcoat and had a halo of wild, greasy hair and a long, tangled beard, but even if he'd been wearing a suit and tie and had a trip to the barber's, I'd have known he was batty the minute I laid eyes on him. He didn't walk, he shambled, like he'd spent a long, long time on meds. His eyes, set in deep black pits of sleeplessness, were ferociously crazy.

He turned to stare at me.

"Hello, sonny. Do you like to swim?"