Patrick Muldoon's pals fear his wild partying during his stint on Days of Our Lives might have contributed to his shock death. Wonderwall.com can reveal the soap star, who was just 57 when he died of a heart attack on Sunday, April 19, was in peak physical condition after beating his demons. Addiction problems were 'open secret' Patrick Muldoon would often come into work hungover. By: MEGA The fact he had no known health conditions has made his death even harder to comprehend for his loved ones, including his partner, Miriam Rothbart, who found him unconscious in the shower.