Charlie Sheen allegedly held his wife Brooke Mueller at knifepoint and threatened to have her killed if she told anyone, according to a police affidavit released Monday. After Mueller phone 911 (hear the call on TMZ) in a panic that Sheen had threatened her with a "knife," officers went to a home in Aspen. Mueller told police that she and Sheen were arguing in the bedroom when she said she threatened to file for divorce. That's when Sheen allegedly grabbed her by the upper part of her throat while straddling her on the bed and pulled out a pocket knife.