Lisa B. Tharps

Samantha's relationship with Richard has her considering monogamy, although he may not be feeling the same way. Carrie, on the other hand, is forced to face her fear of commitment.

Dr. Reid embarks on his own investigation into the murderr of a young boy years earlier in Las Vegas that he strongly believes has a connection to his own childhood. Jane Lynch ("Two and a Half Men") guest stars as Dr. Reid's mother, Diana Reid.

The team investigates the 1991 murder of a 14-year-old foster child who was starting to establish herself as a talented rapper.

President Dalton's mental status is questioned when he threatens Russia over its potential role in a sonic attack at the U.S. embassy in Bulgaria.