21 October 2010,
We've been hearing about the appearance of Rachel, Danno's ex-wife for a while now, and she's finally been cast by the Hawaii Five-0 team:

Entertainment Weekly reports that Australian actress Claire Van Der Boom (The Pacific) has won the role of the witty and well-off Rachel, with whom Danny shares daughter Grace. The so far unseen Rachel has often angered Danny by preventing him from spending time with Grace.

Labels: Claire Van Der Boom, Hawaii Five-O, Scott Caan, Season 1, Spoiler