"Hawaii Five-0" knew what its fans wanted ... If the studio had wanted to bring back the show for season 11, I have to believe they would have tried to get Alex to stay. But it's now moot." ...

The final chapter of Hawaii Five-0 not only closed a television era but also marked a very special moment for a family of actors who shared the screen for the last time.

Only ET was with the two casts talking about their highly anticipated crossover episode! 'Hawaii Five-0's season nine finale airs Friday, May 17, at 10 p.m. ET on CBS.