Overview
- His manager confirmed the actor died of a heart attack at age 57, with family saying he was at home in Beverly Hills.
- Sister Shana Muldoon-Zappa said his partner, Miriam Rothbart, found him unresponsive in the bathroom after morning coffee and called 911, but paramedics could not revive him.
- Family members described him as fit and health‑conscious, noting a happy night out at a new Los Angeles County Museum of Art event hours earlier.
- In the frantic rush to see him, his father fell and fractured his shoulder, according to his sister.
- Muldoon was known for Days of Our Lives, Melrose Place, and Starship Troopers, and he pursued music and production; he is survived by Rothbart and close family, and no official coroner findings or memorial details have been announced.