The Sentinelese killed him for intruding.
Chau discovered missions work at Oral Roberts University.
The university had safe work, but Chau soon grew hungry for riskier endeavors.

McBaine said Chau believed he was embarking on an act of love to bring love to this isolated society.
Part of the film is exploring the psychology that enabled Chau to justify it.
McBaine and Moss interviewed former missionaries who grew to be more self-reflective about their true motivations in missionary work.
Im not sure John ever got to be old enough to have that kind of reflection.
Chau actually made two trips to North Sentinel Island with the help of fishermen and other missionaries.
The first time, the Sentinelese fired an arrow into his Bible as a warning shot.
When he returned, there was no more warning.
Chau also read an English Bible and never learned the Sentinelese language.
Call it blind faith or call it madness, Moss said.
So they made it clear.
They didnt want to receive him.
It does make it a challenge to make a story about it.
If you think John is a martyr, youre going to come and be challenged, Moss said.
Check out the panel video above.