Casey Novak leads an average life, save for raising her much younger sister and her seemingly unrequited crush on a certain male detective. But when the past rears its ugly head, and old demons emerge, is forgiveness a possibility? Casey/Elliot

The CIA and NCIS clash as Gibbs's team works to uncover who shot Annie Walker's Navy contact. The case turns out to be harder than expected, as the members of both agencies find themselves facing tough truths about themselves and others mid-investigation.