OLIVIA Newton-John admitted she was never able to "find peace" after her on-off boyfriend vanished mysteriously while at sea.
The Grease star - who died on Monday at the age of 73 - spent her later years haunted by the disappearance of her ex, Patrick McDermott, amid chilling claims he faked his own death.
Cameraman McDermott, who Olivia had on-off romance with for nine years following her divorce from Matt Lattanzi in 1995, vanished while on an overnight fishing trip on June 30, 2005.
He and 22 others set sail off the coast of Los Angeles - yet no one noticed when the boat, "Freedom", returned to land without him.
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