Magnum, P.I. - Season 6 Episode 11
Rapture

As he and T.C. deep sea scuba-dive, Thomas sees a young boy who appears out of nowhere with no breathing apparatus and signals him to follow. Low on air, Thomas is unable to follow him, and later faces the skepticism of T.C., Higgins and Rick about his vision. An adamant Thomas, determined to prove that hes right, learns that his vision matches the description of a young boy, Kelii Parker, killed five years earlier in an explosion at sea. The boys mother has always blamed herself for his death, and as Thomas learns more about Kelii, he begins to believe that his vision of the boy was destiny reaching out to lead him to the cause of the fatal accident.