“Killers Of The Flower Moon” (** out of four) was an impossibly long and dense adaptation of David Grann’s 2017 novel set in 1920’s Oklahoma in which lucrative oil is discovered on Osage land leading a recent veteran (Leonardo Di Caprio) to marry an Osage woman (Lilly Gladstone) and then he is persuaded by his ruthless uncle (Robert De Niro) to have her and all others killed systematically so they will inherit the oil and the land until the F.B.I. later interceded on this. Extremely well-acted and has a fascinating story but it wanders aimlessly for some time and is never as powerful or insightful as it should have been. Story goes on for nearly three-and-a-half hours but ending still feels truncated and abrupt. A disappointing reteaming of Di Caprio, De Niro, and director Martin Scorcese.