Can McGarrett handle a murder investigation and a reunion between his mother and sister on Hawaii Five-O? "Ohuna (The Secret)" is the seventh episode of the show's third season.
Added:

Hawaii Five-0 Season 3 Episode 7 Quotes

Looks like our kidnap case just became a murder case.

Chin Ho

Steve: Stand down mom, it's work
Doris: Did you just tell me to stand down?
Steve: Affirmative.