When Jake is allowed the weekend off because of a hot streak in solving cases, he decides to take on an 8-year old cold case that everyone believes is unsolvable. With the help of Sgt. Terry, the two try to crack the case once and for all. Meanwhile, Amy plans a romantic trip with new boyfriend Teddy, but an unexpected event with Captain Holt jeopardizes it. Gina and Rosa let a downtrodden Charles in on one of the best-kept secrets of the precinct, demanding he be silent about it. But Scully and Hitchcock do some of their best detective work ever to figure out what Charles is hiding.