A história que você está descrevendo é " O Marciano " do curta de Ray Bradbury coleção de histórias "The Martian Chronicles". Houve pelo menos duas adaptações; A mini-série de TV de 1980 (descrita abaixo) e um episódio de "Ray Bradbury Theatre" de 1992.
It is some years since the original expedition to the Red Planet ended in tragedy. Colonists from Earth have arrived in droves, such as Rafe ( Wolfgang Reichmann ) and Anna ( Maria Schell ) Lustig. One night, in the midst of a storm, they are awoken by what appears to be their dead son, David ( Michael Anderson Jr. ). He offers no explanation for his apparent resurrection. The lonely couple are so glad to have him back they do not press him for answers. But, whilst on a trip to a nearby town, he goes missing. Various people see him as whatever they want him to be. Father Peregrine ( Fritz Weaver ) sees him as 'Jesus Christ' ( Jon Finch ), replete with crown of thorns and bleeding hands. Rafe is so keen to have back his son he is prepared to accept even a Martian lookalike. But 'David' finds himself surrounded by people and, unable to cope with all their thoughts, dies.
Mini-Séries de Crônicas Marcianas (Episódio 2)
O Teatro Ray Bradbury - S06E08 - O Marciano