Here we intend to know how many and who were killed in Utuado linked to the Nationalist Revolution of 1950. In addition, answer some questions that arose before, during and after the analysis of the findings found. What was the international and national context in which the Nationalist Revolution of 1950 occurred in Puerto Rico? How many and who were the fallen beyond the nationalist combatants in Utuado? Why was the strategy of direct and frontal war dominant in the Nationalist Revolution? Was there a conspiracy to assassinate the fallen nationalists in the vicinity where Washington and Betances de Utuado streets meet? Who were the possible intellectual authors of these murders? Do the death certificates of the fallen tell the truth? Was there irregular handling of these to cover up the truth? What name should we give to what happened in eight towns in Puerto Rico, beginning in late October and early November 1950