Meredith dreams of what her life would have been if her mother had been healthy.
While Cal is on vacation in Mexico, he investigates a bizarre case of a missing woman; meanwhile, the rest of the team deal with reports of contaminated blood.
The international manhunt for Eli David and Jackie Vance's killer turns into a federal witch hunt against Gibbs and the team.
Jane and Maura investigate a family's background when a man is killed; Jane suspects that Maura is hiding something.