The Cain family is thrown into disarray when teenage son Leopold is kidnapped. The family disagrees with how to handle the situation--should they call the police, or pay the ransom?

Something from Conrad's past may have a connection to Leopold's kidnapping. Conrad meets with his father to explore this. A package arrives which makes the Cain's wonder if Leopold was the only child targeted for kidnapping. Knapp heads to Brown University to find Aubrey.

At the insistence of Knapp and King the Cain's host their annual charity ball so that people won't figure out that Leopold has been kidnapped.

The kidnappers target Leopold's bodyguard Virgil once again as he prepares for surgery. Conrad is questioned by the police regarding something from his past. Ellie joins an annoymous group for parents of kidnapped children. Knapp looks into the bullet that was used to shoot Virgil.

Knapp and King figure out the name of the suspect and race to find the mastermind. Leopold tries to get to a cell phone before the battery dies.

Ellie's father Benjamin Rand steps in and takes over and he is willing to do anything to get his grandson back, but will it cost him his own life? Meanwhile Knapp and King keep searching into the Cain's past while Conrad is arrested.

The story of the kidnapping is leaked to the press. Knapp finds out that the Cain's might have known that Leopold was a target for kidnapping.