What can you tell me about the upcoming Hawaii Five-0 prequel episode?

Mega Buzz: Apr 9, 2013 09:18 PM ET by Adam Bryant and Natalie Abrams McGarrett travels to North Korea to collect the remains of a fellow SEAL who died in the mission we saw a snippet of in the first episode of the series. Why does McGarrett go to such great lengths three years later? Let's just McGarrett is indirectly to blame for his partner's death. Several of the flashbacks play on father-son dynamics, which makes watching the re-contextualized scene of McGarrett talking to his dad for the last time even more brutal. http://www.tvguide.com/News/Mega-Buzz-Glee-Greys-Spoilers-1063830.aspx