McGarrett's sister is kidnapped on the Hawaii Five-O episode "Ke Kinohi." Get an early look at the installment via this trailer.
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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