Synopsis

Following a disastrous dinner with the parents, Castle and Beckett are dispatched to find the sole witness to a murder. Their mission quickly turns perilous when they are ambushed, forcing them to escort the witness into hiding. Lost in an unfamiliar and dangerous part of the city, stripped of their communication, authority, and weapons, Castle and Beckett must now protect him from a ruthless group of mobsters – a task complicated by their own simmering tensions.