Castle Creator Andrew Marlowe Talks 3XK! Is He Really Dead? — Exclusive!

Castle Season 5, Episode 5: "Probable Cause" brought the return of a familiar face — the infamous Triple Killer, aka 3XK. Unfortunately, the episode didn't give us the closure we'd hoped for, as the psychotic serial killer disappeared without a trace. Like most die-hard Castle fans, we're anxious to know what really happened to 3XK and whether or not he'll rear his head again. When Wetpaint Entertainment questioned show creator Andrew Marlowe, he remained relatively tight-lipped about...


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