Castle Season 5 Casting: Which Gossip Girl Alum Will Guest Star?

Don't worry — Alexis Castle won't be befriending bad girl Serena van der Woodsen at Columbia University this fall. But Serena's recently deceased grandmother will be making an appearance on ABC's hit crime procedural in Season 5, sometime in October. According to TVLine, actress Caroline Lagerfelt, aka Gossip Girl's late matriarch CeCe Rhodes, will play Angelica Hentley, a "wealthy socialite who employed the victim on one of Castle and Beckett’s cases." Not a far cry from her...


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