Part 4 of the Wolf Runaway series, following on from Ree and Penn's meeting in Wolf Slave... Penn isn't part of his owner Ree Hotstaat's wolf-pack. He's a slave. He isn't family. Even if the pack's cubs don't always seem to understand that. So why would Ree take him out horse-riding with them? Between wolf owner and human slave, public acknowledgement is a risky step to take...