Travel agent Douglass Bishop is found killed by a large dose injection of ketamine (an anesthetic) in the Dyson home. He had no criminal record, financial or other known problems. A camera found at the scene contains photos of the various rooms in the house. Castle and Beckett realize the photos were taken so everything could be put back in place. They also found photos of other houses and in one of the photos, there was a picture of the squatter reflected in a mirror along with some prescription bottles, which leads them to another place the squatter had been at. When they get permission from the owners, who are on a cruise they won as a prize, a search turns up another dead body, part of a gang of three. Meanwhile, Castle's ranking in an eligible bachelors list and rumored affair with Kate get her to 'rival-date'.
—KGF Vissers