John Bain

When married couples fostering young children end up being killed in Seattle, the BAU team looks for an unsub with a maternal-yet-murderous instinct. Also, Garcia fears a possible proposition from Kevin. Teri Polo guest stars.

A popular children's author has a seizure moments before attempting suicide; House and Cuddy go on a date with Wilson and his girlfriend (Cynthia Watros).

Owen and T.K. risk their lives to save two brothers trapped in a homemade minefield. Meanwhile, Grace receives an emergency call from a conjoined twin who’s brother is dying, Tommy interviews new candidates to fill the team’s open EMT position and Paul’s mother and estranged sister pay him an unexpected visit.

Catherine revisits one of the very first cases she worked as a CSI when the convicted felon in the murder claims the verdict was based on faulty evidence. (TV-14)

The CSI's must delve into the high-pressure world of an elite prep schools when a student is murdered while studying for the SAT'S. Meanwhile, Lindsay returns home to Montana to visit her father and deal with some issues from her past. James Read guest stars. (TV-14 L, V)