Magnum, P.I. (1980)

S1E9 Missing in Action

Eight years after Eric Tobin was declared missing in action, his fiancée, Laura Fraser, who possesses ESP, remains unconvinced of his fate. Magnum forms a friendship with her and, as he delves deeper into Tobin's story, uncovers that he was a skilled and covert government operative under the direction of a mysterious figure known as Delta One.