While working on a 17-year-old crime, Allison exhibits unusual behavior that may be pivotal in solving the case, but at the same time puts her family at risk. Meanwhile, Joe's dinner invitation to a colleague yields surprising results.

Allison is asked by Devalos to help some of his friends find their missing daughter, but encounters conflicting evidence of who is responsible for her disappearance. Meanwhile, Lynn and Scanlon encounter relationship trouble.