What is the 411 on the Missing 411? Let's find out. 

Sources:

Missing 411 Doc on Hulu

https://www.otherhand.org/home-page/search-and-rescue/the-hunt-for-the-death-valley-germans/introduction/

https://www.toptenz.net/10-unsolved-missing-411-cases.php

https://www.reddit.com/r/Missing411/top/?t=all

https://www.startribune.com/longtime-minneapolis-teacher-found-dead-in-idaho-after-hiking-tragedy/225667131/