“Johnny Frank Garrett’s Last Word” (** out of four) was a muddled supernatural thriller about a young man named Johnny Frank (Devin Bonnee) who is executed for a heinous crime he didn’t commit but leaves behind a curse letter which executes vengeance on all connected to his unfair trial and how the prosecuting attorney (Mike Doyle) tries to save himself and his family and resolve his own feelings of bitter guilt. Admirable attempt at a horror story mixed with an anecdote about the machinations of the criminal justice system is too silly and too routine to succeed as a whole. Doyle’s fine performance is a plus and makes this watchable.