- A billionaire is the subject of an attempted murder and Kate is assigned to protect him, sparking jealousy in Castle.
- Eric Vaughn, the billionaire, finds himself interested in Kate and attempts to kiss her. She tells him her relationship with Rick is serious but wonders where it is going.
- Vaughn is meant to be poisoned and then a sniper shoots at him. Turns out his lawyer was transferring money out to pay off his gambling debt and was afraid his boss would find out.
Castle Season 5
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