Significant Others

Beckett moves in with Castle while her home is being fumigated — at the same time as Castle's ex-wife Meredith moves in because Alexis has fallen ill. And to make it a perfect storm, their latest case is the murder of a high-powered divorce attorney with a reputation for representing jilted women. While Castle gets distracted by the thought of his ex-wife and his girlfriend living in close quarters, the trail of evidence leads them to the mysterious disappearance of a woman in the Caribbean.