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

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.

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…

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.

Red’s scheme to reclaim her kitchen backfires; the inmates stage a Christmas pageant; Piper’s plans unravel even as she realizes her life is in jeopardy.

Thanksgiving arrives with the promise of a visit by Larry, but Piper’s raunchy dance moves land her in solitary with a holiday feast of moldy bologna.

Pennsatucky discovers a new skill; the inmates try to scare delinquent teenagers straight; Pornstache’s side business suffers a tragic setback.

The prisoners mourn one of their own and even a drunken Pornstache reveals surprising emotions; Larry gives a revealing radio interview.

Painful truths reorient several relationships and careers; Pennsatucky feels disrespected by Piper, which is not good; Larry delivers an ultimatum.

When her sighting of a legendary feral chicken polarizes the inmates, Larry wonders if Piper is getting too absorbed in the “fishbowl” of prison life.

The inmates campaign along racial lines for positions on a prisoners council, but Piper tries to stay above the increasingly raucous competition.

Piper wants the prison’s outdoor running track reopened, but in order to get it, she’ll have to give her corrections officer something he wants.

Red gets pressured to smuggle drugs through her kitchen; Larry publishes an article about Piper in the “New York Times;” two babies come into the world.

Michael reconnects with his mentor and offers to help go after a drug cartel in exchange for visitation privileges with Fiona. Meanwhile, Fiona leans on a new friend for help…

The IRA wants proof that one of their own has flipped and Samcro intends to give it to them.

To secure weapons and raise money for Abel’s search, the club exploits its porn connections to entertain Henry Lin’s clients, which doesn’t sit well with Opie (Ryan Hurst). Jax’s decision…

Jax and Clay head towards Canada after Jimmy provides misleading intel on Abel’s whereabouts. The rest of the club splits off to help Happy with a pharmaceutical favor in redneck…

When old bones are discovered on the outskirts of Charming, Clay must deal with long-buried secrets; the club sets its sights on prize money in a bare-knuckle brawl; Kohn’s investigation…

With Stahl pressing the women of SAMCRO, Jax sees Unser as the key to salvation; Cherry reveals interesting information about her past.

The club travels to Nevada to store arms with a brother club; when the Mayans pose a threat, Clay decides to “patch-over” the tribe, making them an official charter; Tara’s…

A small favor for Piney’s old war buddy turns into a big problem for SAMCRO; Gemma deals with the effects of aging.

Someone uses a laser light to blind a pilot and bring down a jet, which carries $1.2 billion in checks to be delivered to banks on the eastern seaboard. The…

Danny could be in big trouble for roughing up a suspect. Detective Connie McDowell joins the team for the day.