The first trailer for the documentary gives us a hint of what to expect, including interviews with Ledger's family and footage from his own camera archives.
Michelle Williams opened up about raising her 11-year-old, Matilda Rose, without the help of her daughter's father, the late Heath Ledger.
"It affected me in ways I can't necessarily put in words or even would want to talk about publicly,” he said.
While Heath Ledger tragically passed in 2008, his costars have seen success in TV and movies in the years since the teen classic's release.
We’ve done some sleuthing, and come to find out, all of the celebrities on our list have been bamboozling us all along about their secret twins.