When he starts dating drop-dead gorgeous Molly, insecure airport security agent Kirk can't believe it. As his friends and family share their doubts about the relationship lasting, Kirk does everything he can to avoid losing Molly forever.

After a serial killer imitates the plots of his novels, successful mystery novelist Richard "Rick" Castle receives permission from the Mayor of New York City to tag along with an NYPD homicide investigation team for research purposes.

An elite team of FBI profilers analyze the country's most twisted criminal minds, anticipating their next moves before they strike again. The Behavioral Analysis Unit's most experienced agent is David Rossi, a founding member of the BAU who returns to help the team solve new cases.