All hell breaks lose when Frank loses a perp inside the precinct; Mike stumbles on the perp (who doesn't speak any English) and is taken hostage at gunpoint; Ruben and Al are sent on a mysterious mission.
A bag with a severed foot is found, prompting a visit to some mob contacts and a few practical jokes; Mike secretly does a background check on Jan's new boyfriend; Toni is groped on the subway.
Mike and Pip are less than thrilled when they're assigned to take the District Attorney's twelve-year-old daughter on a ride-along for her school paper, especially when they lose her in the city; Frank disguises himself as a priest to draw out a confession; members of the squad encounter an unusual ""nun"".