If you've never seen a docu on this subject, I'd say this was a good starting point but don't be fooled, the Docu maker definitely alludes to finally revealing the truth behind the D. P. incident. But he doesn't. It's still unsolved to this day (Oct 2021). Be warned though: constant use of the death pics of the souls that died Re a little jarring. If you like a good picture of a frozen dead body though, this is for you.