Volume 4 - "Heart's Desire!" Collects THE WALKING DEAD #19-24. Written by ROBERT KIRKMAN. Art by CHARLIE ADLARD & CLIFF RATHBURN. Cover by TONY MOORE. Life in the prison starts to get interesting for Rick Grimes and the rest of our survivors. Relationships heat up, fizzle out, and change entirely almost overnight. By the end of this volume, relationships between key characters are radically changed, setting the stage for future events in THE WALKING DEAD. Softcover, 136 pages, B&W.