There is a dedication at the end of this and the previous episode that reads "In memory of John Moresco". He was a member of the Theatrical Teamsters Local 817 in New York and was a driver in the television industry. He passed away in August, 2012.
In the bathroom scene between Cassidy (Dean Winters) and Amaro (Danny Pino), Cassidy calls Amaro Ricky Ricardo. Pino actually played Desi Arnaz in the 2003 TV movie Lucy. Desi Arnaz played Ricky Ricardo.
Paula Foster is played by Paget Brewster, a main character on another long-running crime drama, Criminal Minds.
Barry Querns is played by Reg E. Cathey, who also played a character named Martin Querns on Oz. Oz also starred Christopher Meloni and Dean Winters - Stabler and Cassidy on SVU.