From the introduction: Here Lies Ole Jack Bones is intended for four characters with an average party level (APL) of 9. Characters who complete this adventure should earn enough experience to reach halfway to 10th-level. The spirit of a famous thief is back to wreak havoc on the countryside. This campaign takes place in Arden, although it can be set in your own world. Any party composition should be able to finish the adventure with intelligent play.