Jerry moved into his new office in the subbasement of Five-0 HQ. He complains a little that he’s not sitting upstairs with the rest of the gang, but he’s happy to be an official “special consultant” with Five-0, business cards and all. I still am a little unsure what role he’s serving here, but hey, what do I know?
Danny’s nephew, Eric Russo (Andrew Lawrence), is back! You might remember him from episode 12 of season 3, when he was sent to Hawaii so Danny can straighten him out. (This is also the episode in which Steve and Danny are mistaken for a sorority sister’s two gay dads.)
Eric is starting a job at the crime lab. He’s got the science part down, but Uncle D still has to teach him important lessons like “less caffeine,” “tone down the misogyny,” and don’t refer to murder victims as “clubbed baby seals.” It’s his first day. He’s learning.
In our case of the week, a scuba diver is collecting lost trinkets from the bottom of the ocean, including a coral-crusted gun. Unfortunately, coral doesn’t stop the gun from accidentally firing, killing the diver.
When Steve and Danny meet with Max, he tells them the bullet was a match to a John Doe killed six weeks ago. If they find the gun, they can solve both murders.
Steve goes diving for evidence, and finds their victim’s bag and the gun that shot him. Danny and Kono take them to Eric at the crime lab to get some more information. The gun and some keys recovered have only been underwater for six weeks; they must have been lost during the original murder.
Eric also recovers a serial number for the gun, and tracks it to Eddie Brooks, who legally buys guns with permits and sells them illegally to other people. He identifies the John Doe as Miko Moseley—he was killed by his own gun.
At Miko’s apartment, Steve and Lou find fancy paintings, expensive suits, and stacks of (counterfeit) cash that he’d been printing himself. Miko had also been renting a house from a man named Philip Kanae with his fake money.
When the team heads to the house, they find Kanae—beaten to death and thrown in the pool. On Kanae’s laptop, Eric finds out that Kanae was illegally recording his renters, and footage from Miko’s stay is missing. Luckily, Eric is able to recover it, and he and Jerry start combing through it.
Meanwhile, Kono and Steve head to check out the boat of a shady drug dealer, Aaron James, whose keys were found with the gun. There’s blood on the boat, but Aaron spots Five-0 and takes off. But he’s no match for Steve the Super-SEAL, who leaps onto the boat, takes out Aaron, and steers the boat clear of a busy dock just in the nick of time.
Hawaii Five-0 episode 6x03, "Ua 'o'oloku kea nu i na mauna"
Eric and Jerry hit pay dirt with the recovered footage, and see a video of a drug deal gone wrong. Aaron kills Miko (not knowing he’s on camera), and Kanae had been blackmailing him before he was killed as well. Unfortunately, Aaron escapes prisoner transport with a little help from his boss: Gabe. (There’s Chin’s subplot.)
And now, last but not least, Steve. Catherine is still “sleeping over,” if you know what I mean. (Sex. They’re having sex.) Steve is still planning on proposing, and the ring is finally ready. But then he overhears Catherine on a mysterious phone call to someone back in Afghanistan.
Steve fills Danny in and says he thinks Catherine is leaving again. The proposal is off. Danny tells Steve to cool his jets. He doesn’t know what’s going on or what the call is about. He just needs to talk to Catherine first.