The team travel to Seattle to determine whether a serial bombing of centres of automated technology is being conducted by a protest group or an individual with a different agenda altogether.
Andy tracks down a witness to testify at her trial; Carina and Maya deal with a stressful situation; the crew responds to a car wreck.
Lightman is called to testify in the trial of Clara, a young widow accused of murdering her much older billionaire husband.
Having finally found the deadly uranium, Danny and McGarrett begin the near-impossible task of extracting it from the jungle.
New technology helps find the true rapist in a cold case, but he is murdered before he can go to trial.