You don't see too many arrests on a golf course. But you will on the episode "Ke Kinohi."
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Danno and McGarrett are on a key case when Hawaii Five-O returns in 2011. The former's sister has been kidnapped.
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McGarrett has a lot on his place on the first episode of 2011 for Hawaii Five-O. For starters, his sister has been kidnapped.
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Hawaii Five-0 Season 1 Episode 13 Quotes

Well, dad's a cop, and you're like a freaky ninja. The least I could do was pick up a phone.

Mary McGarrett

I have a number of a therapist I wanna give you. Walk up steps like a human.

Danno