Trent's ex surfaces after a sex change and plots to steal a San Diego treasure. Elsewhere, Piper's pick for book club goes unread.

Trent is suspended and forced to spend time at home, where terrorists plot to attack him. His replacement, an old nemesis, is a hit at the NTSF.

Trent tracks a dolphin serial killer and turns to a similar murderer in captivity for advice on catching his target.

Space-shuttle plans are stolen and sold to Mexico, so the team must retrieve them before the U.S. loses the space race.

Trent plans a cruise for the NTSF team, but he's got ulterior motives to capture a terrorist rumored to be hiding out on the ship. Meanwhile, Piper brings her new fiancé along for the trip.

The team must prevent an attack on San Diego by Japanese soldiers who've been lost at sea for decades.

Trent visits a peaceful parallel dimension where terrorism doesn't exist and decides to help his doppelgänger restore balance to the world.

Piper is brainwashed to become an assassin, and her mission is to hunt down her NTSF teammates. Elsewhere, Jessie catches the eye of a model photographer.

Trent tracks the source of strange occurrences, including a hostage situation with SUVs and Sam's partnership with a creepy new team member.

Terrorists plan to bomb the San Diego Day parade in a plot that involves the President of the Navy. Elsewhere, Alphonse is tasked with finding the perfect gift for Trent's kids.