Book 'em ... into surgery.
Caan, who plays Detective Danny "Danno" Williams, is scheduled to return to the set Monday. Production will continue without him, though he will not miss an episode.
The 33-year-old actor's injury will be written into the show. Danny will be taken to the doctor's office following a mishap on the job. When the doctor asks whether anything traumatic has happened lately, Danny replies that he's got a new partner, Alex O'Loughlin's Steve McGarrett. "This guy is a physical injury!"
"Working with McGarrett, you're bound to get a few bumps and bruises along the way," executive producer Peter Lenkov said.
Hawaii Five-0 is scheduled to premiere Monday, Sept. 20 at 10/9c on CBS.