Get ready to solve some mysteries with Castle: Season 1-4 on DVD. Starring Nathan Fillion as a bestselling mystery novelist turned amateur detective, this drama series follows the investigations of the NYPD's homicide department alongside his partner, Detective Beckett (Stana Katic). With 21 discs and all four seasons included, you'll have hours of entertainment as you watch the chemistry between the two leads grow and experience the twists and turns of each case they solve. This DVD set is in PAL format and region code 4 (AU, NZ, Latin America...) with an aspect ratio of 1.78:1. It comes in a tall/DVD case and has a maturity rating of M. With an all-star supporting cast including Susan Sullivan, Molly C. Quinn, and Jon Huertas, Castle is a must-watch for any fans of crime dramas.