(The Royal Eyes Rest Above) Junior and Adam back up McGarrett when a bank heist in progress forces Steve to make a potentially heartbreaking mistake. Also, Adam is forced to face an empty home without Kono.

The episode was rated 7.67 from 1118 votes.

(At Kama'oma'o, The Land of Activities) At Halloween, Five-0 must investigate a string of murders that mirror stories from well-known Hawaiian folklore. Also, Grover is called to visit a man hours away from execution who may hold the key to a case that has plagued Grover for years.

The episode was rated 7.67 from 1209 votes.

(Your Knife, My Back. My Gun, Your Head) The team enlists an old friend when a crime boss is murdered, triggering revenge killings across the island; McGarrett and Danny work out details concerning their new restaurant venture.

The episode was rated 7.68 from 1277 votes.

(To Do One's Duty) The ex-wife of the man who shot Danny reveals how Danny helped save her life; Tani and Junior are assigned to walk the beat as uniformed officers for the day; Adam is framed for the murder of the crime boss he has been tracking. Jimmy Buffett returns, Alex O'Loughlin directs his first episode and plays the guitar.

The episode was rated 7.69 from 912 votes.

(The Future is in the Past) When Danny is shot while quarantined in the hospital with McGarrett, Tani and Junior, he’s left unconscious and clinging to life, imagining a future for everyone in Five-0.

The episode was rated 7.69 from 1014 votes.

(Death at Sea) When investigating a deserted yacht adrift at sea, McGarrett, Danny, Tani and Junior are exposed to a deadly bioweapon and the rest of Five-0 have only eight hours to find an antidote.

The episode was rated 7.70 from 1020 votes.

(Though the Fish is Well Salted, the Maggots Crawl) Five-0 must help Duke after he is forced to steal crucial evidence from the police locker in exchange for his kidnapped granddaughter. Also, Jerry goes undercover at a mental health facility in order to solve a murder.

The episode was rated 7.71 from 823 votes.

(The Answer to the Riddle is Seen) Harry Langford enlists McGarrett and Danny’s help to track down Lady Sophie, a teenage British royal who has run away while under his protection. Also, Grover, Tani and Junior work a 25-year-old murder case after a mysterious Betamax tape arrives at 5-0 headquarters.

The episode was rated 7.72 from 840 votes.

(Kind is the Bird of Kaiona) Catherine Rollins recruits McGarrett and Jerry to help her track down a uranium deposit thought to be hidden on an abandoned Hawaiian island before a suspected terrorist can make dirty bombs with it. Also, when Junior falls and is trapped in a ravine, he reflects on his estranged relationship with his father.

The episode was rated 7.72 from 856 votes.

(No One Has Ever Died For the Mistakes He Has Made; Only Because He Didn’t Repent) A hitman, Leroy Davis, McGarrett’s father failed to arrest comes to McGarrett to finally confess his crimes and admit where he buried his victims. Also, Jessie makes a dangerous decision that could ruin Adam’s life.

The episode was rated 7.74 from 877 votes.

(Dog Days) McGarrett and Five-0 work with an injured police dog who is the only witness to an ambushed drug bust. Also, McGarrett is visited by Junior Reigns, a former SEAL, who is looking to join the task force.

The episode was rated 7.75 from 1373 votes.

(No Matter How Much One Covers a Steaming Imu, The Smoke Will Rise) The lives of Five-0’s informants are in danger when the HPD system is hacked and one ends up dead, forcing McGarrett to enlist the help of hacker Aaron Wright, who he just imprisoned.

The episode was rated 7.77 from 1271 votes.

(The Round Up) When an FBI agent who was cracking down on organized crime is killed, McGarrett rounds up every gang-related criminal on the island to find the culprit. Also, McGarrett tasks Adam with forming a new division within Five-0 to take on organized crime.

The episode was rated 7.78 from 1016 votes.

(Ancients Exposed) McGarrett and Five-0 discover a Russian spy ring hiding in plain sight when a Russian nuclear attack submarine appears off the coast of Waikiki. Also, Tani is conflicted by her unnerving discovery at Adam’s house. Season Finale

The episode was rated 7.78 from 804 votes.

(The Tough Branch That Does Not Break in the Kona Gale) McGarrett joins Junior and his SEAL Team on a high risk covert mission to capture an elusive target who is holding his mentor, Joe White, hostage. Also, Gerard Hirsch and Kamekona help Grover and Tani on a murder case involving masterpieces stolen by the Nazis during WWII and Tani makes a shocking discovery,

The episode was rated 7.79 from 794 votes.