ROBERT WAGNER, 92, DESPERATE LAST DAYS

Holed up 1,000 miles from L.A. & haunted by Natalie’s death

MORE than 40 years after the mysterious drowning of his wife Natalie Wood, Robert Wagner is still tormented and haunted by her death in his sad last days, sources say.

The actor, who turned 92 on Feb. 10, is now living with his wife of 32 years, Jill St. John, on a Colorado ranch, but life isn’t rosy, sources say.

“Wagner’s health isn’t too bad, at least as far as he’s let on, but people around him suspect what’s troubling him is more mental than physical and that it’s making him miserable,” dishes an insider.