VIDEO: First Look - Tonight's Season Finale of HAWAII FIVE-0

On tonight's season finale of HAWAII FIVE-0, titled "Aloha. Malama Pono," as the CIA tasks Five-0 with finding a dangerous killer loose on the island, Kono goes on the run for a murder she did not commit. Meanwhile, McGarrett's prison visit to Wo Fat ends with a shocking discovery, on Monday, May 20 (10:00-11:00 PM, ET/PT) on CBS. Christine Lahti, Ian Anthony Dale, Daniel Henney and Autumn Reeser guest star.

Check out a first look below!

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