As the details of Brittany Murphy’s are sorted out, some doctors are speculating that a combination of prescription drugs was behind the actress’ heart attack earlier this week. “When you have a 32-year-old person dying suddenly, and especially a celebrity in Los Angeles, you can place your bet down that it’s going prove to be a case of acute combined drug toxicity,” Dr. Cyril Wecht tells the CBS Early Show. Meanwhile, Murphy’s husband, Simon Monjack, was apparently left out of her will, as she wrote it before they were married, according to E! News. “She left everything to her mother,” a source says.