That’s why Peter always had an eye out for the cops. Seeing a patrol car
coming, he ducked into an alleyway. The street had taught him that it was 
smarter to stay put and try to act invisible rather than attract attention by 
running away. If he ran, they’d think he was guilty of something. If he didn’t
run, they hardly ever suspected him of any wrongdoing. He didn’t get thrown in
jail too much anymore, and when he did, he usually relished spending the night 
in a nice, warm cell. They chained him up, but that was all right. He never gave 
his name, and when they wanted to run a DNA ID check, Peter insisted he’d always
been a troll and wasn’t a runaway. Invariably, they believed him. Nobody cared
much what the trolls did, after all.