When a beautiful woman is found dead in an alley, all clues point to her being a victim of the notorious Triple Killer. The Triple Killer, or 3XK, terrorized New York City four years ago, then mysteriously disappeared. Now he's back. In a deadly battle of wits, Castle and Beckett race against time to stop 3XK before he claims his next victims.
| Creator | Andrew W. Marlowe |
|---|---|
| Actor | Nathan Fillion, Stana Katic, Molly C. Quinn |
| Country | United States of America |
| Production | Beacon Pictures |