When Partners Collide (джен)

Set at the beginning of season 22 Olivia Benson is dropping Noah to school when she is handed an envelope. The contents of which are going to take her to a place she'll rather not visit and cause her to collide with her former partner and friend whom she has not seen in nearly 10 years. Can they learn to work together again and put the past behind them to break a trafficking ring. (with ref to William Lewis).