CBS's tropical cop reboot adds some considerable guest starpower this season. Terry O'Quinn, returning to Hawaii and reuniting with 'Lost' pal Daniel Dae Kim, has a recurring role as a former Navy Seal commander who trained McGarrett. Also, iconic actress Patty Duke will guest in the season's second episode as the mother of a murder victim.

'Hawaii Five-0' Season 2 premieres Mon., Sept. 19, 10PM ET on CBS