Hawaii Five-0 Season 1 Episode 6 (Hawaii Five-0 s01e06) with title “Ko’olauloa” aired on Monday, October 25th 2010 at 10:00 pm via CBS Network.
Here is summary for Hawaii Five-0 Season 1 Episode 6 :

When the CEO of a hugely successful surf company is murdered, Kono revisits her past while Five-0 is thrown headlong into the varied but interconnected worlds of North Shore surfing.