When Holmes and Watson investigate the murder of a fertility lab technician, they discover the woman had a secret personal life that leads them to multiple suspects. Also, the tables are turned on Watson when she's investigated by an NYPD detective.
Criss (James Marsden) and Liz need a dining room table for their Valentine's Day celebration; Jack spends time with his mother-in-law (Mary Steenburgen); Frank and Tracy try to find a date for Lutz.
When a young girl is found dead with a doll that is believed to have been left as a totem, detectives Benson (Mariska Hargitay) and Stabler (Christopher Meloni) team up with Captain Jackson (Guest Star Jeremy Irons), a psychologist who assisted them with a recent case, to investigate her murder. Jackson joins the detectives as they retrace the girls last steps and go to meet with her piano teacher June Frye (guest star Elizabeth Mitchell). Jacksons skills prove to be invaluable in deciphering the meaning of the totem and ultimately finding her killer.
Frank is taken by surprise during an on-air interview with Erin's boss; Danny and his new boss clash as they investigate a drive-by shooting. Meanwhile, Jamie and Jenko help out detectives with an apparent suicide.
