Season 4 of "Castle" consists of 24 episodes, each approximately 40-45 minutes long. The season premiered on September 19, 2011, and concluded on May 7, 2012. This season continues to follow Castle and Beckett as they solve crimes in New York City while navigating their personal relationship.

Throughout Season 4, Castle and Beckett face various challenges in both their professional and personal lives. The season explores deeper into their relationship, including moments of intense romance and comedic relief. The chemistry between Fillion and Katic remains strong, making their characters' interactions enjoyable to watch.

The supporting cast, including Molly Quinn (Beverly Mase), Jon Michael Hill (Detective Lanie Parish), and Tamala Jones (Captain Rhonda Robinson), add depth to the series with their well-developed characters.

The 720p torrent version of Season 4 provides a good balance between video quality and file size. The resolution of 1280x720 pixels offers clear visuals, making it suitable for viewers with standard HD equipment.

If you're a fan of mystery-comedy dramas with strong character development and engaging plots, then "Castle" Season 4 is definitely worth watching. The season's blend of humor, romance, and suspense makes it an entertaining watch.