Madalyn Horcher

After the body of a navy lieutenant is discovered aboard a destroyer during a tiger cruise, Gibbs, Quinn and Palmer travel out to sea to investigate.

McGarrett and Kono suspect that an abused young girl may be the victim of a sex trafficking ring on the Island, and Chin and Grover investigate a murder at a sober living facility.

Col. Ethan Willis joins the team, bringing new techniques and technologies learned in the field of combat to the hospital; Willis and Mike take a helicopter to Malibu to help shark bite victims; Jesse welcomes new residents.

A murder at a rave in the desert leads DB Russell and his team to unearth a harrowing case of two sisters held as sex slaves.

A patient is admitted after re-enacting the crucifixion. Meanwhile, Taub is suspicious of his wife's fidelity and the team attends a co-worker's wedding.

An international crime boss offers to surrender if permitted to return to the United States in time to watch his daughter walk down the aisle, leading MacGyver and the team to crash the wedding to ensure he does not flee.