James Stacy
He made 3 appearances on the show as Mary's BF and what a gorgeous hunk but what a mess: 2 brief marriages to well known actresses both ending in divorce and later a motorcycle accident that took his left arm and leg and left his GF dead. To top it off he attempted suicide and was arrested for molesting a little girl and did 6 years in the clink.
Such a sad life with so much promise.
"You may as well go to perdition in ermine; you're sure to come back in rags." Katharine Hepburn