The 'devil's knot story' is about a story full of mystery. It could be about a crime that has a lot of elements that seem really strange and difficult to understand. It might involve things like false accusations, convoluted evidence, and a lot of confusion in general. It's like a story where it's really hard to tell who is right and who is wrong.
Devil's Knot is indeed based on a true story. It delves into actual incidents and the people involved, presenting a fictionalized account of those events.