Lachlan Buchanan

Aria, Emily, Hanna and Spencer are on the quest for answers of what Alison knew before she died, and they might have just got a big lead when someone from Alison's past appears.

One father has a guilty conscience, one has a daughter he doesn't trust, one is hiding a secret from his daughter and the other is MIA, it's not the ideal time for the annual Father-Daughter Dance.

The team welcome back Emily Prentiss when they are called upon to investigate the disappearance of three women.

When an Army veteran threatens to blow up a pawn shop, Sullivan reflects on his time as a Marine to deescalate the situation. Vic and Dean try to reason with a man battling Alzheimer's disease, and Pruitt takes a stand to honour fallen firefighters.

After some tense and traumatic experiences, the firefighters get a visit from a psychologist.

While at a lunch seeking Pruitt's blessing for their relationship, Andy and Sullivan jump into action when immigration officials raid the restaurant. Travis gets roped into an awkward lunch with Chief Dixon, Emmett and Emmett's girlfriend.