The Tomorrow People (1960)

There was something on Mars that killed people. One expedition vanished without a trace. Out of another, only one man came back. That was Johnny Wendt - the only man who had seen Mars and lived. His knowledge could be decisive in the desperate East-West race for Space. But Johnny didn't know what it was that made Mars a death-trap...
...and he didn't know that he'd brought it back with him!