The actor son of former mobster Mickey Spillane fell to his death yesterday.

Robert "Bobby" Spillane, an actor who starred on  "Rescue Me" and "Law & Order," fell six stories from his Hell's Kitchen apartment window.

No foul play was suspected in Bobby Spillane's death.

Jim McManus, Spillane's uncle and a longtime neighborhood political boss, said  Spillane's death was a "terribly sad accident."

"He was the nicest kid in the world," said McManus. "He helped everyone."

Spillane, had  one arm in a sling, and had leaned on the screen of an open window to shout to to his brother, Michael, who was on a street below, McManus said. The screen collapsed and Bobby Spillane fell to the ground,.

"The screen gave out," McManus said. "He only had one arm and he went out with the screen."

Spillane's father, who was known as the "gentleman gangster," was gunned down in 1977 by the rival "Westies," the Hell's Kitchen Irish mob.

In an article in The New York Times after his death, Mickey Spillane was described by a detective as "a very strong enforcer, a handsome, black-haired tough guy out of the movies."

He was no relation to the crime writer of the same name.

Some years back, Bobby Spillane wrote an Off-Broadway play called "All Dolled Up" about a cross-dressing gangster in the 1960s.