B&B’s Sarah Brown guest stars tonight on ABC’s Castle with Nathan Fillion (Ex- Joe, OLTL). Here is the background from ABC on tonight’s episode: “Mysteries abound when a family returns from vacation to discover a dead man in their daughter’s bed. Thinking they’re investigating the murder of a squatter, Castle and Beckett soon find themselves unraveling a multi-million dollar heist. Meanwhile, Castle tries to keep Beckett from finding out that they’ve been romantically linked when he’s featured as one of New York’s 10 most eligible bachelors.” Castle airs Monday nights at 10:00PMEST. Sarah Brown plays the character of Amanda Livingston.