The team is tasked with helping NASA's top-secret rocket launch, but they are forced to sabotage their own mission when Walter's date from the previous night has a bomb strapped to her chest.moreless
Brian embarks on his first FBI field assignment when he travels to Quantico to lend his skills to the bureau unit that catches serial killers. Meanwhile, Rebecca comes closer to discovering Senator Morra's connection to NZT.moreless
Sylvester's estranged father, a retired general, enlists the team's help after discovering that an African dictator has uncovered a deadly weapon of mass destruction from World War II and intends to use it.moreless
Senator Edward Morra is targeted by a would-be assassin, and Brian is ordered to sabotage the FBI's investigation into the murder attempt in order to prevent exposing the senator's connection to NZT.
The team must brave the cold in Antarctica in order to save a U.S. Special Forces unit. Meanwhile, Toby risks his life to find Happy after she gets cut off from the team and lost in a blizzard.moreless
An internal investigation is launched after Casey Rooks and his SWAT team are caught stealing NZT pills from a stolen batch they helped recover.
The brother of a promising local boxer is murdered and the chief suspect is the outspoken reigning champion opponent from the mainland.
Team Scorpion goes undercover at a university in order to find a hacker who infiltrates the Federal Reserve and threatens to collapse the global economy.
Boyle comes to the aid of a former military buddy who's being charged with murder, and he asks Brian for help proving that his friend's prosthetic arm was hacked to commit the crime. Elsewhere, Brian's dad is adamant that his son stop working for the FBI.moreless
Team Scorpion and Walter's parents visit Megan in the hospital as her health deteriorates, but they end up quarantined when a deadly fungus outbreak threatens to infect everyone.
Five-0 goes back to school when a college professor is killed and Danny goes undercover as his replacement.
Brian makes a deal with Naz to get his own personal work "headquarters," but to score the space he has to capture the FBI's 10 Most Wanted criminals in just two weeks. Meanwhile, Brian's relationship with his father becomes strained under the secretive nature of his new life working for the Bureau.moreless
The team is blackmailed to break into the United Nations to assist in the assassination of a dangerous arms dealer; and Sylvester makes a bold move to protect Megan's wishes.
Five-0 works with a charming con man to find a killer, after his female partner is murdered on the job. Meanwhile, San Francisco police inspector Abby Dunn helps Chin investigate the murders of five Chinese arm dealers.moreless
Abbie is put in charge when Daniel heads to DC, and gets into more trouble when Joe and Jenny's actions against Atticus threaten her career.
Brian tangles with real pirates who are holding a girl against her will. Brian and Rebecca work to clear Naz of treason charges, only to discover that there's a family secret she is keeping from the FBI.moreless
Team Scorpion helps the CIA locate a top-secret aircraft in Area 51 in order to raise money for Walter's research to save his sister's life.
Brian fakes being sick in order to take a day off from working with the FBI. Unfortunately, the plan backfires when the CIA abducts him from home to "borrow" his NZT-enhanced skills for what turns out to be a dangerous black ops mission that ends up spiraling out of control.moreless
The team must stop a runaway train with Paige and Ralph aboard. Meanwhile, Toby competes in his first boxing match in an attempt to impress Happy.
Pandora resurrects a foe from Ichabod's past to unleash fear in Sleepy Hollow. To find their opponent's weakness, Abbie and Ichabod turn to their new friends Booth and Brennan for help. Meanwhile, Joe and Jenny discover that the man who is behind the theft of the Shard is an old friend of Joe's father.moreless
Brian's physical and mental health begin to deteriorate again, but Edward Morra is demanding a high price in exchange for another inoculation. Brian secretly looks for an alternate cure for himself while he works with Rebecca outside FBI parameters to find the creators of NZT.moreless
A nefarious virus is uploaded to Walter's computer that turns the team's new "smart" building project into a burning death trap with people locked inside.
Pandora unleashes the demonic creature that was the basis for the Tooth Fairy on the children of Sleepy Hollow. Meanwhile, Abbie tells Jenny about finding their father, and Ichabod continues his quest for American citizenship.moreless
Brian discovers a shocking secret about Rebecca's late father, but worries that telling her will land him in legal trouble; at the same time, he ends up meddling in her personal life while learning self-defense from her secret FBI boyfriend.moreless
The team goes undercover on the set of a superhero movie in Kazakhstan to dismantle a nuclear missile being sold by terrorists.
Pandora's newest threat is a killer from Ichabod's schoolboy past. Meanwhile, Joe and Jenny find a new player when they go looking to recover the Shard of Anubis.
Loyalties are tested when Sands demands that Brian steal the FBI's secret files on NZT. When her estranged father dies, Agent Harris is conflicted after learning what he left her.
Walter, Cabe and Happy become trapped in a top-secret submarine with a limited oxygen supply and the potential to self-destruct after an explosion propels it to the bottom of the ocean.
Pandora unleashes a creature that seeks to kill those discovering secrets. Meanwhile, Abbie's new boss arrives in Sleepy Hollow, and Joe goes to Jenny seeking answers.