Patrick Muldoon, the American actor best known for playing boxer Austin Reed in the long-running NBC daytime soap opera Days of Our Lives and for his role in the 1997 sci-fi film Starship Troopers, died at home on Sunday following a heart attack, his manager confirmed. The California-born actor, who also played villain Richard Hart in 1990s primetime drama Melrose Place, was 57. Tributes have poured in from former colleagues, with Days of Our Lives co-star Alison Sweeney describing him as "brilliantly talented, endlessly kind" and "a truly gifted guy" who will be "profoundly missed."