McGarrett is MIA!

Hawaii 5-0 star Alex O'Loughlin has taken time off from the CBS show in order to seek "supervised treatment for prescription pain medication due to a recent shoulder injury," his rep said.

Considering all the stunts Alex seems to do for the show, it's not surprising that he suffered such an injury. Here's to hoping he recovers soon!

So what does O'Loughlin's current treatment mean for the rest of the cast and crew?

While there isn't any word on how many episodes Alex will miss (if at all) in his absence, CBS says that the show is actually ahead of schedule and that it will complete a full second season, as ordered from the network.