Brad Gardner, the photographer, goes downtown for questioning. He tells the team that he found the ball in his yard, then threw it over and into the window. He tells the detectives that he was at a photo shoot when the baby was kidnapped.

Eric locates Keith riding his motorcyle. Keith tells Eric that he already dropped off the money to the kidnappers. He says that he is expecting a text with his sister's location. Eric says that there will be no text. Eric and Horatio go to the park. Under the bench where Keith said that he dropped off the money, Horatio finds a pacifier.

The pacifier is brought back to the lab and Boa Vista finds that the DNA sample from the saliva matches Sophie. She finds that the DNA matches the mother, but not the father. They figure that Jill had an affair.

Jill admits to having an affair with Brad Gardner. She says it was a one time thing. She says that her husband doesn't know about it. Horatio tells her that most kidnappings involve one of the biological parents. Later, Brad is brought in and told that he is the father. Brad says that he is surprised at the news. He tells the detectives that he hopes that the Walsh's don't try to get child support money from him. He says that he did not kidnap Sophie.

Calleigh examines the bullet that killed Marty and finds that it belonged to a .357 Magnum used by Carla Hoyle. Horatio and Ryan arrest her at her house and find the weapon and Keith's backpack with the cash in her car. After she is arrested, Carla admits that she was hired to kidnap the baby by Ricardo Sanchez, an employee of a restaurant near the mall. Ricardo provided the distraction as Marty and Carla took Jill's baby.

Boa Vista and Tripp visit Ricardo's work and learn that he quit that day. They look in his locker and find a book containing a sepia toned photo of Sophie and Jill. They figure that the Brad was involved in the kidnapping.

Brad is taken to the station. He admits that he always thought that Sophie was his baby. He broke into the Walsh house and took a hair sample to make sure. He performed the DNA test and found that he was the father. He hired Ricardo to kidnap the baby. Brad expects to be contacted by Ricardo to receive his baby. Brad is told that Ricardo has gone missing.

Calleigh examines Ricardo's book and finds that he was planning to meet with a couple flying in to the country to sell off the baby. Horatio tracks down couple and arrives as Ricardo is taking the money for the baby. Ricardo sees the police come after to him and escapes with both the baby and cash. Horatio chases him down and Ricardo crashes into a pile of cardboard boxes, which causes his truck to flip and roll over several times. Ricardo crawls out of his truck and points his gun at Horatio. Horatio shoots and kills Ricardo. As the vehicle ignites in flames and begins to smoke, Horatio saves the child. Later, Jill arrives and recovers her baby. Jill asks if there is anything she can do to thank Horatio and he says that she already has.

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