Like Father, Like Daughter

Alexis and a professor are investigating the case of a man on death row in Pennsylvania, and when his exoneration is denied, with only three days until the sentence is carried out, she enlists Castle's help, even though she is still angry at him. When they begin to dig into the case, they encounter resistance from the townspeople, but with help from Beckett and the team, they uncover details that the local police overlooked, and find that the situation is much more complicated than it looked.