Tommy Kane tells Alex Cross it is over now. Alex responds that it's not over yet. Leon Merceir accepts a call in Cambodia near a beach. He underestimated Alex, informing the detective he's an intelligent individual.
Alex recaps the previous events to pin the murders on Leon. He remembers, in front of the downtown building, Leon is not wearing a ring given to him by the King of Cambodia. Leon confesses that he hired the hired hand to execute Fan Yu and Erich Nunemacher. He also claimed to have hired another man as his decoy to escape the financial loss.
Leon's motivation was to recover from his financial woes. He stood to lose a bundle of money. Hence, Leon decided to hire a professional assassin to kill specific targets and to fake his own death. Leon never intended for Alex's wife to get killed.
Alex indicates that Leon will not get away with the crimes. Leon believes he is untouchable. His personal assistant has a drug problem, so the Cambodian authorities raid his retreat home to arrest her. Even worse, Alex tells Leon there are drugs stashed in a department near his chair.
Leon becomes agitated, as he refused to take responsibility for the crimes. Alex informs Leon the punishment for drug smuggling in Cambodia is death. He settles his score with Leon. Alex confirms to Tommy it is now over.
Tommy drops Alex off at his home. The two childhood friends reminisce of their childhood days. Tommy gives Alex his F.B.I. application to save a stamp. It is obvious Alex accepted the F.B.I. profiler job.
Tommy also intends to take an F.B.I. job, too. Alex thanks Tommy. We sense Alex Cross is a prequel to the two previous movies.
A "For Sale" sign is planted on the front lawn. Alex's children are packing the boxes. Grandma walks down the stairs to inform the children that movers charge by the hour, which they need not to forget anything... Alex walks to the front door. He smiles.
Grandma finishes her line with they need to not forget anything they love. Alex smiles with hope.