Don and his team are called in to investigate who is behind a deadly gambling ring that is running a high-stakes Russian roulette tournament. Also, Don and Charlie become concerned about Alan's financial health.

The team searches for a geneticist's daughter who they suspect was abducted by her unstable mother, but become more concerned when they think the young girl may be a clone. Also, Charlie and Amita talk about having kids, and Liz reveals a dark secret.