Adria Dawn

When a Pentagon cryptographer is found dead, the team steps in to investigate, and soon uncover information that suggests she wasn't alone when she died.

The team stakes out a warehouse to catch a suspected thief but ends up witnessing a murder; Ducky keeps a secret from the team.

Earl fills in at a fast food restaurant to help a newlywed couple go on their honeymoon and learns that the boss is a bully.

Dawson is rattled by a suicide note she receives in the mail; Casey contemplates a life-changing purchase; Severide looks into Bloom's dark past.

Sean, fed up with living in Christian's shadow, sells his share of McNamara/Troy to Christian and Michelle; Gina Russo re-enters Christian's life when she learns Michelle will become Wilber's adoptive mother.

Sean and Christian receive an unexpected visit from Merrill Bobolit; Escobar Gallardo blackmails the surgeons into visiting him in prison; Christian, Sean and Julia learn that Matt is married.