In 1975, he married model and actress Dani Crayne Greco, the two of them remaining together until his death from a massive heart attack on February 13, 1980. For much of his life, David was a heavy drinker and he smoked four packs of cigarettes a day, all of which took its toll.

What happened to David Jansen?

David Janssen, television's quintessential actor, died early Wednesday morning after apparently suffering a massive heart attack. He was 48 and had no prior history of heart problems.

When did Jansen die?

David Janssen died of a sudden heart attack in the early morning of February 13, 1980, at his home in Malibu, California, at the age of 48. At the time of his death, Janssen was filming the television movie Father Damien.