Hawaii Five-0 - Loa Aloha - Recap

The team are called to investigate an unstable man who has set it upon himself to blow up the children of unsuspecting people. A Judge is first targeted and this brings about the question of whether or not this is a revenge plot. When a second murder happens and the identity is related to the first, it turns out that it most definitely is a revenge plot. Steve and Chin track down the guy responsible and talk to his ex wife. The bomber's son was killed in prison after getting a more than suitable sentence for a DUI. He has now taken it upon himself to make everyone responsible suffer as much as he has. They figure out his final target and get to them before he can hurt anyone else.

Danny's adventurous brother (Dane Cook) shows up for a surprise visit. Besides showering Grace with gifts and scheduling hot air balloon rides, he's being followed by the FBI. Danno discovers that his brother is under investigation for stealing millions of dollars from his clients. Danny refuses to believe his brother would ever do something like this so he and Steve decide to snoop around and follow him before confronting him about it. When Danny sees that he's wrong, he tries to convince his brother to turn himself in and allow Danny to help him. His brother decides to run instead with Danny helpless to stop him.