Steve and Catherine reminisce with John and Carrie

Family is the one who loves and cares, even if this person is not necessarily of our blood. Family is the one who is at our side in difficult times more than in the easy times.

The family attends DJ and Angie's Open House.

Chaos strikes as a team member goes missing just before a devastating attack on Oahu. As the rest of Five 0 races against the time to find their friend and prevent more carnage, they realize the two things are connected, and that there's a reason their island was targeted. Make as many enemies as they do, and it's bound to catch up with you eventually.

It's back to the carnival grounds for Steve and Danny, but this time it's strictly for fun.

Danny has rules and procedures that he's always followed as a cop, but sometimes, even he knows they need to be thrown out the window.

DJ has some ideas for his school's upcoming Open House.

A letter throws Mel off balance. Is Steve really back to his ex-girlfriend?

Part one: A new case has Danny confronting characters that make him … wary, to say the least.

Sometimes all you need is someone to help open the door.

Joan hopes Peanut is ready for a new experience.

A fundraiser has Danny in his element, and Angie in her glory as the family enjoys so familiar sounds.

Mel has to fly to Düsseldorf to sign the purchase contract for her house at the notary. Steve is in the middle of a case and can't accompany her. Mel is stranded at the airport in Frankfurt because snow and ice have made it impossible to land in Düsseldorf. She is one of the lucky ones who can get a hotel room, but then the past catches up with her.

Danny gets some well deserved recognition.

DJ's baseball team learns about a fun new opportunity.

It all starts with nightmares, a power outage, and an old acquaintance who suddenly reappears and maybe drives a wedge between Steve and Catherine? And later a young girl shows up at headquarters and, convinced that her mother has been murdered, asks the team for help. However, the case develops very differently than expected and old secrets are revealed...

Angie spots a case of McGarrettitis

Sometimes you just need a sign.

Catherine and Steve share bittersweet memories with the Rollinses and Grandma Ang after receiving sad news.

Mel has to cover for Noelani for a few weeks. But she keeps interfering in the investigation herself, which doesn't suit Steve at all.

Conversation turns interesting when the kids take charge of the kitchen

Angie may have a new favorite football team.

No holiday season goes smoothly for the Five-0 team and it seems their kids are destined to share that fate. It could certainly be argued however, that they brought most of their troubles onto themselves. Regardless it makes for good stories while passing out candy. 5th story in the Myah-verse. Warning: may mention corporal punishment of a teenager.

When Angie sees a situation that needs addressing, her McGarrett genes are on full display.

Steve finally goes too far with his off-the-books antics, and Governor Denning is determined to teach him a lesson. What better way to get a SEAL to toe the line, than by making him perform community service?