13 October 2010,
TV Guide's "Mega Buzz" has another spoiler about Danno's ex-wife, Rachel and a storyline concerning her, below;

Q: Can you give me some scoop about Danno on Hawaii Five-0?

A: Tired of his ex-wife's angry phone calls? Get ready to meet her! The show is looking for a British actress to play the role, but don't worry, she'll still be plenty angry. In fact, she's livid when Danny and McGarrett show up to use her home as a command center. Over the course of the stakeout, the team will realize that the tension between Danno and his ex is sexual.

Labels: CBS, Hawaii, Season 1, Spoiler