When a young woman who is supposed to be in prison is found dead at the scene of a robbery, the Angels are called in to investigate. Kris enters the minimum-security prison population to determine how Amy Nalon was involved in the robbery of Kenyon Armored Security. Prison toughs Aggie and Matron Wallace advise Kris to cooperate in return for their protection. Intimidated a little, Kris still manages to learn that Amy leads knowledge of the floor and alarm system at Kenyon. She doesn't learn who the accomplices are, though. Kris finds herself framed -- blamed for the thievery; what's worse, Big Larry, a thug, goes after her but falls into a swimming pool. Kris saves Larry and earns his friendship. Aggie pressures Kris into producing detailed floor diagrams of her supposed former employer -- the Van Dorian Diamond Company. Kris complies, but before she can warn the Angels, Aggie and her cohorts rob the store of thousands in jewels. She returns to prison to discover that they know her true identity; Aggie goes after Kris -- but Big Larry intervenes and the thieves are subdued.