many mystery story follow the standard whodunit path represent murder most foul and gathering of clue and gaggle of possible perps and sprinkling of red herring and and inevitable showdown between clever evildoer and even more clever crime solver . forgotten abandon the well trod and give u complex character who may or may not have commit terrible act . the fact that at the end of three episode we have no easy answer and no neatly tie package might frustrate some and but for me it be the indication of an intelligently craft tale which probe and disturbs and and haunt with the question represent what do an evil person look like . excellent acting and production combine to make a mystery not easily . forgotten .