Actress Allison Mack, 38, has written a letter ahead of her sentencing on June 30 in which she apologised for her actions, shared her remorse and insisted she has renounced NXIVM leader Keith Raniere and his teachings

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Smallville star Allison Mack has written a letter renouncing NXIVM after pleading guilty to two charges linked to her involvement in the cult-like group.

She's due to be sentenced next week and has now written a letter addressing "those who have been harmed by my actions".

In the note she also distances herself from the group's founder, self-improvement guru Keith Raniere.

In October, Raniere was jailed for 120 years after being convicted of sex trafficking of children, conspiracy, and conspiracy to commit forced labour in June 2019.

He was alleged to have turned female followers into sex slaves and even branded them with his initials.

Allison Mack is due to be sentenced on June 30
(Image: JUSTIN LANE/EPA-EFE/REX)

Mack was claimed to have been his right-hand woman in a group within NXIVM and was charged with racketeering conspiracy, forced labor conspiracy, wire fraud conspiracy, sex trafficking conspiracy, sex trafficking and attempted sex trafficking.

She pleaded guilty to one count of racketeering and one count of racketeering conspiracy in April 2019 after striking a plea deal with prosecutors.

Her sentence is due to be handed down at a court in New York and she could be facing up to 17 years behind bars.

However, she's written a letter expressing her remorse for her actions and asking for mercy.

The note states: "I threw myself into the teachings of Keith Raniere with everything I had.

Allison was previously known for her role in Superman TV series Smallville
(Image: Getty Images for Amazon Studios)

"I believed, whole-heartedly, that his mentorship was leading me to a better, more enlightened version of myself. I devoted my loyalty, my resources, and, ultimately, my life to him. This was the biggest mistake and regret of my life…

"I am sorry to those of you that I brought into Nxivm. I am sorry I ever exposed you to the nefarious and emotionally abusive schemes of a twisted man.

"I am sorry that I encouraged you to use your resources to participate in something that was ultimately so ugly.

"I do not take lightly the responsibility I have in the lives of those I love and I feel a heavy weight of guilt for having misused your trust, leading you down a negative path."

She has written a letter renouncing NXIVM and leader Keith Raniere
(Image: PETER FOLEY/EPA-EFE/REX/Shutterstock)

A memo from her lawyers asked U.S. District Court Judge Nicholas Garaufis to spare the actress jail because she has co-operated with prosecutors and has "publicly denounced Raniere (and her own prior association with Raniere) in the strongest possible terms."

The memo, seen by The Hollywood Reporter, added: "That [her denouncement of Raniere] is made clear by Ms. Mack’s plea allocution, her decision to cooperate completely and fully with the government, and is further underscored in her letter to this Court as well as her efforts to demonstrate her remorse to the public generally and more specifically to those she harmed.

"There is thus no need to impose an additional sentence of incarceration on Ms. Mack to achieve specific deterrence."

Mack will hear her fate at a sentencing hearing on June 30 at U.S. District Court in Brooklyn, New York.