Karou was mysterious. She had no apparent family, she never talked about herself, and she was expert at evading questions--for all that her friends knew of her background, she might have sprung whole from the head of Zeus. And she was endlessly surprising. Her pockets were always spilling out curious things: ancient bronze coins, teeth, tiny jade tigers no bigger than her thumbnail. She might reveal, while haggling for sunglasses with an African street vendor, that she spoke fluent Yoruba. Once, Kaz had undressed her to discover a knife hidden in her boot. There was the matter of her being impossible to scare and, of course, there were the scars on her abdomen: three shiny divots that could only have been made by bullets.