In the early 2000s, every moody teenager prided themself in being able to explain the plot of “Donnie Darko,” Richard Kelly‘s metaphysical film starring Jake Gyllenhaal about a kid who befriends a mysterious figure who tells him he has 28 days to save the world. Now, in a new oral history of the film, Kelly reveals that the notoriously confusing timeline in “Donnie Darko” was made clearer with the help of a certain Christopher Edward Nolan.