excellent job
here are my thoughts
you shouldve showed the bad guy breaking into the house and stalking the woman as she gets ready for bed then come out and kill her
like watch her take a shower hide in her closet as she dresses and goes to bed
that would make it more sinister
the graphics were outstanding
i would have had the husband stalk the bad guy thru gritty streets and abandoned warehouses and rough up some street people for information on him then find him and have the ulimate showdown and have the police think the husband did it and keep trying to arrest him and hunt him
and have the two battle each other and have the badguy kick the crap out of the husband and makes a mistake and the husband stabs him with the same knife he used to kill his wife
or another idea is the husband is stalking himself
a separate personalitty has manifested and hes chasing himself only he doesnt know it and as he chases the guy over the years
and more people get murdered by his alter ego
and he doesnt know hes actaully the killer till one day he meets him and fights him and unmasks him and realizes he is him
spooky?