Alleged victim of video voyeur teacher describes watching video of herself

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When a former Bloomingdale High School student, who we're calling Lynn to protect her privacy, signed up for a fashion design class, she never dreamed she could be anything but safe. 

But the17-year-old's world was turned upside down when she discovered her teacher, 49-year-old Mark Ackett, was arrested - accused of secretly taking video as she and other students changed in a storage room at school. 

Lynn said the news came as a complete shock.

"He was one of those teachers that really cared about his students," she explained. "He made me lose my trust in authority just anywhere."        

Court records reveal investigators believe Lynn was one of dozens of girls who were violated by Ackett. Prosecutors say he used his cell phone and digital cameras to get video of the girls as they changed clothes.

In a very uncomfortable moment during the investigation, Lynn said she had to watch videos of herself undressing with a detective.

"It was really hard and upsetting. mostly I had my bra and underwear on but there was one where I had my bra off and you saw it," explained Lynn.     

Since then, Lynn says she doesn't feel like she can trust anyone. Dressing rooms at the mall now haunt her.

"I was kind of scared to go in the changing room. I kind of look for cameras and make sure there is nothing there," she said.

Lynn's father, Michael Thomas wants to see Ackett behind bars for a long time.

"I don't want to see him in the grocery store in two years because he's had a bad childhood or he's found God, want to see him do hard time," explained Thomas.

Lynn wants that too, and if she gets the chance to face Ackett in court, she says she won't hold back.

"How could you do this, because you seemed like such a great teacher. We trusted you and now you broke that trust," said Lynn.

Ackett faces hundreds of counts of video voyeurism, possession of child pornography and production of harmful materials.

He is pleading not guilty to the charges and is back in court April 4, 2019.