HitFix has a look at the new “horror sitcom,” Holliston, created by and starring Adam Green (Hatchet) and Joe Lynch (Wrong Turn 2, Knights of Badassdom). The two play wannabe filmmakers who moonlight as TV horror hosts and juggle life, love and severed body parts. I say “proper trailer” in the headline because, to date, we’ve seen a couple of goofy promos teasing what is to come. This preview, I think, offers a bit more insight. The series kicks off on FEARnet this April. Take a look…