A violent convict escapes from prison and kidnaps a young couple on vacation; McGarrett's estranged sister comes to town.

When the daughter of the U.S. ambassador to the Philippines is found dead, the governor tasks Five-0 with finding her abducted sister.

McGarrett discovers new clues in his mother's murder when his sister is kidnapped.

When McGarrett's sister is arrested for smuggling diamonds, he enlists the help of an ex-con to set up a sting.

While the team investigates the murder of a young computer hacker, McGarrett tries to stage a long-needed reunion between his mother and his sister.

While working the murder case of an undercover ATF agent, McGarrett and the Five-0 team are tasked with watching Mary’s newly adopted baby after she gets sick.

As Thanksgiving approaches, Five-0 investigates the murder of a secret service agent just as the President travels to Oahu. Also, McGarrett's Aunt Deb visits, bringing with her a shocking secret.

A special personal mission sends McGarrett's Aunt Deb to Oahu. Unstable Japanese WWII bombs hidden on the island are stolen.

While McGarrett helps his visiting sister, Mary, spy on her shady neighbors, Five-0 investigates the murders of a ride-share driver and his passenger. Also, the team teases the youngest members of Five-0 when Junior escorts Tani to a wedding.