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Carlos is taunted by a serial killer over remarks made to a television reporter.

The mother of a karate student is the victim of a violent attack.Trent hopes that martial arts can help her overcome her ordeal and identify her attacker.Meanwhile he and Carlos go undercover to break up a computer theft ring, and Butch encourages the boys to hire an office manager.

A young woman leaves a letter for Butch, which reveals she is his daughter.But when she returns home she finds that her fiancee has been murdered by a team of operatives working for a corrupt defense contractor.

Trent, Kim and Butch search for a man who was kidnapped by a gang of international counterfeiters. Meanwhile, Alex and Carlos offer friendship to the man's traumatized daughter during a camping trip for at risk children.

While searching for a friend's runaway daughter Butch discovers a group of homeless living beneath the city streets .When he turns up missing , Carlos and Trent go undercover - and underground to find him.

A mobster wants the detectives to find his runaway mistress.