Thank you Hawaii Five-0 for this Lost reunion. Terry O'Quinn is on board this season as a Navy Seal Lieutenant Commander who trained McGarrett (Alex O'Loughlin) and it seems that this reincarnation of John Locke is a breath of fresh air for H50. As soon as he steps foot on land in the trailer, the tone switches from doomsday to walking on sunshine. We get it, CBS. We're excited to see O'Quinn back on television too. Hawaii Five-0 returns to CBS for Season Two Monday, Sept. 19.