"Bartimaeus Ptolemys Gate" Back Cover of The Book:
The demon saw Kitty the moment she moved. A wide mouth opened in the stubby, featureless head; double rows of teeth descended from above and rose from the lining of the jaw. It snipped its teeth together curiously, making a noise like a thousand scissors slicing in unison. Folds of grey-green flesh shifted on either side of the skull, revealing two golden eyes that glinted as they turned on her.
Kitty did not repeat her mistake. She stood stock-still, barely six feet from the bent and snuffling head, and held her breath.