martin scorseses favourite leading men robert de niro and leonardo dicaprio are coming together for the directors next film dicaprio who was on the stage to present de niro the life achievement award at sag awards confirmed that he and de niro will be in killers of the flower moon de niro 76 and dicaprio 45 are the only two actors to have worked with scorsese on multiple projects though separately this is the first time that the two actors who have been awardsseason fixtures this year thanks to their performance in the irishman and once upon a time in hollywood are collaborating on a scorsese fulllength film though they appeared in the directors short movie the audition based on david granns bestselling 2017 nonfiction book killers of the flower moon is based on the 1920s osage murders when several native americans of the osage nation were killed after oil deposits were discovered beneath their oklahoma land the newly formed fbi starts investigating the murders the screenplay is by eric roth of a star is born and forrest gump fame de niro has starred in some nine scorsese movies most notable being taxi driver raging bull good fellas cape fear and the irishman while dicaprio has worked with the director on gangs of new york the aviator the departed shutter island and the wolf of wall street