Nick goes on a date at a garbage art exhibit where he realizes that one of the art pieces made with cement blocks has bits of decomposing body in it. The team discovers that the artist collected the cement blocks from a ravine. The team goes to the ravine to investigate. In the cement blocks, they find pieces of a young girl's dismembered body in it. They find that the girl had a flower earning, which is the same MO as the husband and wife killers that Sara worked on years ago.
The team investigates and discovers that the wife, Gina, got out of prison two years ago and currently lives in Las Vegas. Sara and DB go visit Gina and Vegas to find that she is back to her old ways. Sara is furious and makes a scene, telling all her neighbors to watch out for her. This makes DB realize that Sara is still feeling too raw from the case years ago and he grounds her.
The team finds one of the couples' victims, Colleen, and warns her that they are out of prison. Soon after they speak with her, Colleen goes missing. The team works furiously to try and find her. They believe that Gina has now teamed up with a new guy and has got her killing again in a warehouse by the marina. They rush over to save Colleen but they discover a different young victim in the warehouse and the team is stunned to see who the culprit is.