Build a movie plot around this: What did Dave and Kelly find in the swamp? A decaying corpse
A:
In Iberia Parish, Detective Dave Robicheaux (Tommy Lee Jones) is investigating the murder of a young woman and has a chance encounter with a pair of Hollywood stars Elrod Sykes (Peter Sarsgaard) and his girlfriend Kelly Drummond (Kelly Macdonald) who are in the small town to film a Civil War film. Due to his erratic driving, Dave determines Elrod is driving his Lamborghini drunk and sets to arrest him. Elrod, objecting to being sent to jail tells Dave of a decayed corpse that he and Kelly had found up in the swamp.When Dave goes to investigate he remembers a murder he had witnessed as a teenager where a chained prisoner was shot in the swamp and disappeared into the bog. The discovery opens a string of events that ties to several murders in that area that had occurred recently mostly to young runaways and prostitutes. The clues seem to point to a former friend of Dave's, Julius "Baby Feet" Balboni (John Goodman) whose ties with the mafia had caused the two to drift apart and become strained enemies. Julius denies knowing the prostitute whose murder is being investigated. However his story does not corroborate, leading Dave to suspect more to the story.Meanwhile, the discovery of a second body prompts the FBI to become involved in the case, and Dave is partnered with an agent called Rosie Gomez (Justina Machado) whose insight into the case gains Dave's respect and the pair team up to solve the case. Dave attends a birthday party for Michael Goldman (John Sayles) and after drinking a Dr. Pepper, becomes terribly uncoordinated during his drive home and crashes his truck, sending him off in a daze to the forest where he encounters a camp of Confederate soldiers, and their commanding officer General John Bell Hood (Levon Helm) who wishes to help Dave with his journey to solve these murders. When he awakens from his daze, he learns from Gomez that his drink had been laced with LSD.Later Dave's partner Lou Girard (Pruitt Taylor Vince), is found dead, apparently by shooting himself with a shotgun. Dave's queries to...