Black Tatt

Blurb

The Black Tattoo is a young adult fantasy novel by Sam Enthoven, published in 2006. It deals with a boy, Charlie, becoming possessed by a demon that manifests itself in the form of a black tattoo on his body.
The audiobook, read by John Lee, won a Publishers Weekly "Listen Up" Award in 2006 and was picked by YALSA as one of their "Selected Audiobooks for Young Adults" in 2008.