This review will have spoilers about the ending************************************************************************************************************************************************************************************
Simply put, given the amount of deaths that occurred, all by murder, the investigation into what happened at the post would be deep to say the least. Regardless that there is a suspect in hand, any thorough investigation would divulge Maggie's relationship to Sarah thus clearly establishing that she had motive and the accusations against Arthur would fall apart. The way she got the assignment, her predecessor being killed in a hit and run alone would cause a deeper look into her background. I just don't see any way she would get away with everything as the ending implies.