Danny asks Mike for his technical expertise when someone steals $5 million in diamonds from one of the guests. Meanwhile, the arrival of one of the hotel's most loyal high rollers and his announcement of his pending marriage shocks Sam. Elsewhere, a corporate psychologist visits the staff to get a read on the mental health of Ed's team.

Danny is recalled for active Marines duty. Mary gets an unexpected visit from her father. Ed is having a confrontation with an old mafioso about the casino. The casino is also dealing with counterfeit money, and Mike is at the forefront of solving the crime.