The three childhood best friends met while getting their black belt in karate

By Nicole Weisensee Egan
Updated August 11, 2016 08:25 AM
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Gillian Laub

When childhood best friends Brynne Larson and sisters Tess and Savannah Scherkenback first made their public debut casting out demons with Brynne’s father, the Rev. Bob Larson, in January 2012, they quickly became known as the Teenage Exorcists.

It fit because, of course, the girls were teen-agers at the time.

But they are now in their 20s and are spread out throughout the country – Savannah just graduated from college and got married – so they had to come up with a new name.

“You cannot imagine the months of torture trying to come up with this name,” laughs Savannah. “We were halfway across the nation sending each other emails like, ‘Modern Exorcists? Eh, not so much. God squad? Not so much.”

An Internet company had tagged them as “All-American girls by day, exorcists by night and – voila! A new name was born.

“We’re all classic American girls,” says Tess. “We’ve got a cowboy horse love here and two political science majors. All-American exorcists just fits. It’s who we are.”

Though banishing demons is not something any of them want to do full time.

Brynne, 22, is a senior at Arizona State University and wants to be a doctor. Savannah,24, just graduated from college with a political science degree and is hoping to get a job with a government think tank. Tess, 22, is a senior in college in California majoring in political science and minoring in music and says she’s “waiting for the Lord to lead me” as far as her career path.

For now, the three girls are just enjoying their lives fighting demons in their spare time.

“It’s quite an experience when you look pure evil straight in the face and it’s staring right back at you,” says Tess. “Because that’s what a demon is – it’s pure evil.”

For more on the All-American Exorcists pick up this week’s PEOPLE on newsstands Friday.