Charlie Sheen entered a plea of not guilty in his assault case yesterday. The actor is accused of assaulting his wife Brooke Mueller in their home on Christmas Day.

Read Charlie Sheen Enters Rehab

Sheen was charged with third degree assault, criminal mischief and felony menacing in the case. He allegedly threatened to kill his wife and held a knife to her throat.

The actor will return to work on his show Two and a Half Men until his trial begins on July 21. Sheen could serve 1 to 3 years in prison if convicted.

“Charlie is looking forward to going back to work for the final four episodes of Two and Half Men,” said Mark Burg, the show’s executive producer. “He’s also looking forward to clearing his name, putting all of this behind him and spending time with his kids during his hiatus.”

After the incident became public, other details about Sheen and Mueller emerged. Both struggle with substance abuse, and earlier this year, Mueller checked into rehab to treat her alleged addictions to alcohol and crack. Sheen also checked into rehab for alcohol and drug abuse, claiming it was a “preventative measure.”

The couple has 12-month-old twins, Bob and Max. (People)

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