Mary Mara

As a State Department dinner nears, Bartlet boldly vetoes the "death tax" bill, but his staff must scramble when they learn that the House of Representatives has enough votes to override the veto.

When the remains of a young documentary filmmaker are found in a ventilation shaft in an underground Washington, DC, tunnel, Brennan and Booth must venture into the maze of tunnels beneath the city and are surprised to discover a world of homeless shelters underground. Clues lead them to suspect that a man living underground was involved with the murder, but instead he gives them valuable information about the purpose of the victim's underground project.

Roni Sellers (Marianne Hagan) is horrified when she calls her daughter's cell phone and hears screaming and a man's voice. Kaley (Molly Bea Spears), 18, works as a bicycle messenger to help pay her tuition for NYU. She's a good girl and a good student. When she disappears, a high profile case ensues. Mrs. Sellers holds a press conference and offers a reward for Kaley's return, and tips start coming in as to her whereabouts. Sebastian Ballentine (Martin Short), a psychic, also arrives at the station, and claims he's had a vision of Kaley. Stabler (Christopher Meloni) thinks he's a fraud but when he gives them specific clues, they think he could be a suspect.

When the BAU investigates several murders in the Pittsburgh area, the team searches for a pair of UnSubs working as a team. Also, Garcia and Morgan share their Valentine's Day plans for their respective significant others.

Dexter finally strikes a balance between family, career and his secret life, but is thwarted in his pursuit of his next victim. Debra expresses a renewed and unwelcomed interest in their father's checkered past.