Sara McGrath is thankful she has been able to move on with her life after surviving a cult.

The 35-year-old has come forward to share her harrowing experience on Oxygen’s newest docuseries titled “Deadly Cults,” which recounts the horrific homicide cases involving cult leaders who executed manipulative control to sway unsuspecting followers.

The show features interviews with former followers, law enforcement officials, experts, family members as well as friends closest to the victims.

DETECTIVE RECALLS MEETING ‘TRUCK STOP KILLER’ BRUCE MENDENHALL IN ‘DEADLY RECALL’: ‘THERE’S EVIL OUT THERE’

The case of Kansas cult killer Daniel Perez, also known as Lou Castro, is being explored on Sunday. The man, who led a commune known as Angel's Landing, collected millions of dollars in life insurance payouts from dead members and was sentenced in 2015 at age 55 to life in prison.

“You can survive a traumatic event,” McGrath told Fox News. “You can move on and life can be good after a storm.”

The case of Daniel U. Perez is explored on Oxygen's 'Deadly Cults' true-crime docuseries.

The case of Daniel U. Perez is explored on Oxygen's 'Deadly Cults' true-crime docuseries. (AP Photo/The Wichita Eagle, Mike Hutmacher)

OWNERS OF LATE CHILD STAR JUDITH BARSI’S HOME SAY THEY FELT ‘A DARK PRESENCE’ IN ‘MURDER HOUSE FLIP'

McGrath said she and her family joined the commune after Perez met her mother, Jennifer Hutson, a Wichita real estate agent who sold him a house, in 2001. McGrath was about 17 at the time.

“My mom had a journal and she had written how she felt she needed to protect Lou -- or Daniel,” McGrath reflected. “I guess he appeared innocent or as someone who cared too much. My mother was very thoughtful when it came to people so she felt like she somehow needed to protect Lou. He was very charismatic and quite the talker. He somehow appeared wise.”

In Angel's Landing, a 20-acre property located in a rural area north of Wichita, Perez convinced his communal family that he had magical powers, including the ability to see the future, The Wichita Eagle reported.

“In the beginning, it was like a huge support system and everybody was close,” McGrath said. “In the beginning, things were all fine and dandy. But it didn’t take long for things to turn.”

HARVEY WEINSTEIN’S EX-ASSISTANT EXPLAINS IN DOC WHY IT TOOK HER OVER 20 YEARS TO REVEAL ALLEGED ATTEMPTED RAPE

Sara McGrath with her mother during happier times.

Sara McGrath with her mother during happier times. (Photo courtesy of Oxygen.)

'FAMILIES OF THE MAFIA' STAR KAREN GRAVANO EXPLAINS WHY DAD SAMMY ‘THE BULL’ IS APPEARING ON MTV REALITY SHOW

When asked when she first realized something wasn’t right within the commune, McGrath responded, “Probably the first time that Lou raped me.”

According to the Wichita Eagle, Perez insisted to his followers he was a centuries-old angel who needed to have sex with young girls to stay alive. The outlet noted that the Kansas Bureau of Investigation’s sex offender registry showed Perez’s victims range in age from 8 to 16.

McGrath admitted she was too scared to tell anyone what had happened to her.

“I did not reach out and talk to anybody about it,” she said. “Even after he was sentenced, I was a bit scared.”

KIM KARDASHIAN DETAILS HER NEW DOC, SAYS SHE'S NOT WORRIED ABOUT JUSTICE REFORM CRITICS

Daniel Perez also went by Lou Castro.

Daniel Perez also went by Lou Castro. (Photo courtesy of Oxygen.)

‘FORGOTTEN WEST MEMPHIS THREE’ DOC AIMS TO GIVE VICTIMS OF NOTORIOUS CRIME 'THEIR VOICES BACK,’ HOST SAYS

And more horrors occurred behind closed doors. In 2001, there was a plane crash that killed a group member, her boyfriend, and her 12-year-old daughter. In 2003, 26-year-old Patricia Hughes, a follower, drowned at the compound. Investigators initially believed she drowned while trying to rescue her 2-year-old daughter from a swimming pool. In 2006, her husband Brian Hughes was killed when a carjack failed and he was crushed.  He left the care of his daughter to Hutson, who died in a traffic accident in 2008.

PRINCE ANDREW ACCUSER VIRGINIA ROBERTS GIUFFRE TO STAR IN NETFLIX DOC ABOUT JEFFREY EPSTEIN

Sara McGrath said that in the beginning, Angel's Landing offered a support system -- until things quickly turned.

Sara McGrath said that in the beginning, Angel's Landing offered a support system -- until things quickly turned. (Photo courtesy of Oxygen.)

GREEN RIVER KILLER GARY RIDGWAY IS STILL HIDING MANY 'DARK SECRETS' DESPITE CONFESSION, SAYS PROSECUTOR IN DOCUMENTARY

In 2009, McGrath’s now-husband contacted the FBI.

“He wrote them a letter saying that he believed there were financial crimes going on as well as lots of abuse,” she recalled. “And the FBI contacted them back.”

An investigation revealed that the group moved from state to state, The Wichita Eagle reported. According to the outlet, six purported accidental deaths over seven years led to millions of dollars in life insurance payouts. The life insurance payout for Hughes’ death alone exceeded $1 million.

But the big break came when a girl told investigators she was 11 years old when Perez told her to give authorities a made-up story about Hughes’ demise. The girl claimed she had actually heard a splash and scream before seeing Perez drenched and out of breath.

MISSING IOWA TV JOURNALIST JODI HUISENTRUIT'S FAMILY STILL SEARCHING YEARS LATER, DOC REVEALS: ‘IT'S HORRIBLE'

Sara McGrath said she was too scared to come forward with her story.

Sara McGrath said she was too scared to come forward with her story. (Photo courtesy of Oxygen)

EX-JEHOVAH’S WITNESS RECOUNTS SEXUAL ABUSE IN DOC, ORGANIZATION DENIES TRYING TO COVER IT UP

McGrath said she was terrified when she came face-to-face with Perez in court to testify.

“It was extremely scary,” she said. “I wasn’t sure that I was going to be able to do it. With the help of the district attorney and his assistant, I was able to do it. If it weren’t for them and my husband, I wouldn’t have been able to do it.”

Perez was found guilty on 28 charges, the Columbia Daily Herald reported. According to the outlet, there was one count of first-degree murder, eight counts of rape, seven counts of aggravated criminal sodomy, three counts of aggravated assault, one count of sexual exploitation of a child and eight counts of making false information.

The outlet shared that in 2015 Perez was handed two life sentences, plus 406 months with no possibility of parole for 80 years.

LAS VEGAS SHOOTING SURVIVORS RECALL ‘CHAOS AND TURMOIL’ OF HORRIFIC NIGHT, MEETING RESCUER, IN NEW DOCUMENTARY

Sara McGrath today.

Sara McGrath today. (Photo courtesy of Oxygen. )

TED BUNDY’S EX-GIRLFRIEND RECALLS HER RELATIONSHIP WITH THE SERIAL KILLER IN DOC: ‘I WAS DEVASTATED’

If there’s one message McGrath hopes viewers will get from experience is that cults can find ways to entrap people without them even realizing it.

“I don’t think [cults] are common,” McGrath said. “I think that my situation was very uncommon. My mom just kind of accepted all of these whimsical things that he would tell her. She was just sucked into it. I don’t think it’s a very common thing. But I also think that people who are in a cult may not realize that they’re in a cult until they’ve been out for a while. I didn’t realize I was in a cult until I had been out for a few years.”

"Deadly Cults" airs Sunday, May 3 at 7 p.m. on Oxygen. 

The Associated Press contributed to this report.