Horatio investigates the death of a man who accidentally inhaled a lethal combination of chemicals in a neighboring house after he went inside to retrieve his cat. Elsewhere, a resident…

Nora has a Valentine’s Day dinner with a friend and takes a risky ride that could land her in trouble.

Capt. Raydor (special guest Mary McDonnell) accompanies Brenda on an investigation involving the disappearance of a nanny working for close friends of the mayor. Meanwhile, Raydor’s real purpose in taking…

Meredith works on her relationship with Susan and Thatcher. Cristina has to deal with her mother and Burke’s. Alex continues to tend to Jane Doe/Ava. Meredith and Derek’s relationship has…