S1, E2: Despite Rob's promise to Cassie that they won't investigate Operation Vestal because of Rob's intense relationship with Knocknaree — the long shadow cast by that August day when two children disappeared in the woods and were never seen again — he convinces her that they are the best people to solve this case. They make a dark bargain — to keep Rob's secret because he has insider knowledge of that estate and he believes the two cases could be linked. Now, she and Rob are locked into a secret and Operation Vestal is born. As the investigation gets underway, what is increasingly undeniable is that there is an atmosphere around Knocknaree and the Devlin family, and we start to get to know the potential suspects. Just as Rob and Cassie feel they are making progress; Cassie has her own visitation from the past.