Hawaii Five 0 — Episode 12: Ka hopu nui ʻana (The Round Up)

You are watching the episode Ka hopu nui ʻana (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.