A Major Challenge
Wardle and the filmmaking team knew from the get-go that telling this story was going to be a challenge. They had to first earn the trust of the brothers, and then they had to go and track down the truth about a study that was so deeply buried that other projects were even shut down.
Source: Direct Expose
“People had tried to tell this story before; we learned of at least three attempts by major US networks, two in the ’80s and one in the ’90s,” Wardle claimed. “In each case, we spoke to people who’d been involved in those projects, and they told us they got a long way through getting it ready to go … and it had been pulled at the last minute by people higher up.”