Michael Sarnowski’s grimy new historical-adjacent thriller dares to ask audiences to consider a deeply uncomfortable question. What if Robin Hood was not, in true fact, a sexy swashbuckling animated fox? Let alone one who stole from the rich to give to the poor? Or to unite with his band of affable outlaws who communed in the forest of Sherwood to thwart the avaricious overreaches of a swishy spoiled despot king?