Marty is too stupid to be a stand alone killer and a cop keeping the trail cold.
Marty got religion. He debates it ad nauseam with Cole at the revival tent. He is swimming in religion and tries to carry his life in those views. He has a pretty hard time juggling his views and being a cop which, makes him look more unlikely to be suspected. Maggie, when interviewed states how well Marty was doing after returning home from his first bout of infidelity. Mentions how active he is with the church.
The following link is a MAJOR spoiler if in fact, one might suspect Marty's involvement:
http://imgur.com/a/1EAvX
Preauxmeaux for episode 7:
Stills from the preauxmeaux:
Spooky shit.
Of course all of this Marty involvement is speculation, but there is enough there to not rule him out. I'll add another Marty twist...i think his daughter was somehow molested or a subject in the cult. This might be the point that Marty is ruled out, dunno. Maggie herself is not entirely ruled out either....
A parting shot of Beth's ass cause really, there can never be enough of a good thing...
![[IMG]](http://i.imgur.com/BcH3UKw.png)
Click to expand...