it is kind of horrible to watch these type of shows cause someone always has to die, and someone always has to kill them.
the show is kind of a self spoiler, you know cause i like to try to figure things out "along with" the investigators, but whenever they interview any member of the family they always say things like..."they seemed so in love" bla bla bla meaning, gee? did one of the lovers kill the other. the ending being..."so in love, and then he bashed her head in for no real reason"
sometimes there's like 3 suspects, narrowed down until the end, but the interviews can totally give it away before they are suspects even. and of course the people being interviewed "live" not from a previous tapping are usually not guilty either.
anyway, i like the episodes where "justice" is served the best, obviously, but some are left sort of open ended.