S1·E9 Night of the Dead Living

The homicide team pulls the graveyard shift on the hottest night of the year. Bayliss is consumed by the Adena Watson case, driving a bigger wedge between him and partner Pembleton. Giardello finds a baby in a cage. A renegade Santa Claus runs loose in the building and the whole squad tries to figure out who's responsible for a candle that keeps getting lit.