It’s a little known truth of indie film sets that the “indier” the film, the less likely you’ll be able to tell the cast from the crew when visiting the shoot.

I came to this conclusion covering such low budget, tiny budget and micro-budget productions in multiple states over the years. And I was reminded of it just a few minutes into “Sweet Relief,” a stumbling, amateurish thriller filmed with Amherst, Massachusetts subbing for overgrown, backward BFE Rural America.

No, I didn’t have to read the movie’s Internet Movie Database page to realize whoever shot it (Students? Friends?) spent all of six days filming it.

The casts and crews of such films are inevitably young, bright-eyed and bushy-tailed. The actors wear their own clothes, own tattoos and own piercings, and so does the crew, more than a few of whom figure they’re perky and good looking enough to act in movies themselves, and are often right.

But when you see a 20something with lots of ink, a mismatched tank top and cut off jeans and a hat from the horror anthology “VHS” as a character in “Sweet Relief,” you wonder if Adam Michael Kozak was doubling as a grip, setting up lights or reflectors between takes.

There are a couple of decent moments in the third act of this horror thriller, but that’s far too late to do much more than spare it the dreaded “zero stars out of four” rating. The pacing, shot selection, dialogue and plot are clumsy, under-workshopped and nearly unfilmmable. The acting isn’t uniformly bad, but by and large it’s awful enough to wonder if the crew wasn’t shoved in front of the camera because somebody better didn’t show up over those six days.

The score is tonally inappropriate Muzak, so “off” as to make you wonder if they thought any of this was funny.

In an unnamed town where no lawn is mowed, no playground is kept up and no street has a sidewalk, but everybody has Eco Warrior rainwater capturing rain barrels made from recycled plastic (Amherst, LOL) the kids are sharing this social media murder game “Sweet Relief.”

They make a challenge to each other, pointing out someone they’d like to kill or see dead, via cell phone video. The catch is, if they don’t go through with all the promised murders, the Sweet Angel — a dude in a rat or short-eared-bunny mask — will come and do them and all their family in.

Hannah, Lily and Corey (Lucie Rosenfeld, Jocelyn Lopez and Catie Dupont) make such a pact. An “annoying” baby sitter, a boy who jilted one of them and the “c–t mother” of the other seem to be the targets of their pact.

We see that first pointless, pitiless butchery and eventually another killing. But the narrative shifts to Hannah’s frustrated brother (Kozak), his live-in nurse girlfriend (Alisa Leigh), his “crazy” conspiracy theory fan mother (Jane Karakula) and this dopey, Halloween Store-costumed “cop” (B.R. Yeager) and a teen (Gianni Passiglia) he’s trying to impress take over the middle acts.

The cop’s a slob in a corrupt police department, up to no good and always trying to impress his brother officers and Kyle the kid he’s trying to make an informant.

“You shoulda SEEN me in Florida!” should’ve been enough to keep Gerald from getting a job at any other PD in the country. But that’s where law enforcement stands these days.

Social media “murder games” are discussed, murders are carried out, bodies are disposed of, a walk in the woods is interrupted by a swim in the lake (naturally, a woman does this), a witness idiotically confronts a perp and that damned bunny mask wearer is outed. And none of it amounts to anything worth 85 minutes of your time.

With Gerald as an exemplar, it’s no wonder no cop has found a body or sounded the alarm about all this. With soulless kids like this, it’s no wonder a high school science teacher (Paul Lazar) is the biggest conspiracy nut of all. He’s got his reasons.

Writer-director Nick Verdi isn’t quite as green as his surname. Close. He got something titled “Cockazoid” in the can, if not into theaters.

But with a cast like this, who needs a crew? I’ll bet Mr. “VHS” hat has a light meter in his cut-off shorts. If not him, then surely the teen killer girl in shortalls does.

Rating: Unrated, graphic violence, profanity, alcohol abuse, drug content

Cast: Alisa Leigh, B.R. Yeager, Joceyln Lopez, Lucie Rosenfeld, Adam Michael Kozak, Catie Dupont, Gianni Passiglia, Jane Karakula and Paul Lazar.

Credits: Scripted and directed by Nick Verdi. An Art Brut release.

Running time: 1:26