And the killer is...........
Jonesy
Believe it or not, the actor, PJ Byrne, who plays Jonesy is my father's second cousin and he's confirmed 2 things:
1. his character was in fact the killer, though the black dude was set up and turned into the #1 suspect
2. despite airing only 2 episodes, they did in fact film 7
"I don't want anything to happen to him while my mother's alive."