One thing about Castle is that they do a serial killer plot line SO WELL. In the way that they don’t overdo those episodes, and cram like 7 into a season, so you’re like “God can’t they just catch this guy already!” (Pelant on Bones, Mr. Scratch on Criminal Minds, etc)
They’re so good at like one or MAYBE two 3XK episodes a season so every time you’re like “OH MY GOD HE’S BACK!!” And with Beckett’s mom they still manage to keep it fresh even after so long because they don’t spent so long on it every season.













