One is a brave former gymnast who talked to a newspaper about abuse she endured from the disgraced doctor. Reporters at The Indianapolis Star, who broke the story, brought more horror stories to light. With the help of a detective and prosecutor, survivors confronted their abuser in a Michigan courtroom.
On Wednesday, a judge wrote the final chapter. Nassar will spend the rest of his life in prison.
The former osteopathic sports physician with USA Gymnastics and Michigan State University had pleaded guilty to seven counts of criminal sexual conduct in Ingham County, Michigan, and has admitted to sexually assaulting and abusing young girls under the guise of providing medical treatment.
Here are the stories of those who served justice to Nassar.
Rachael Denhollander
Former gymnast Rachael Denhollander is credited with helping to shine the light on Nassar's abuse.
Denhollander told The Indianapolis Star of Nassar's abuse in a September 2016 story. She was the last of more than 150 women and girls to confront Nassar in court during his sentencing hearing.
"Larry is a hardened and determined sexual predator. I know this first-hand. At age 15, when I suffered from chronic back pain, Larry sexually assaulted me repeatedly under the guise of medical treatment for nearly a year," Denhollander said.
"He did this with my own mother in the room, carefully and perfectly obstructing her view so she would not know what he was doing," she said.
"Larry's the most dangerous type of abuser. One who is capable of manipulating his victims through coldly calculated grooming methodologies, presenting the most wholesome, caring external persona as a deliberate means to ensure a steady stream of children to assault," Denhollander said.
The other survivors
Survivors shared their stories in court, fighting back tears, recalling the horrors. Kyle Stephens. Emma Ann Miller. Olympian Aly Raisman. More than 150 others.
Raisman to Nassar: You touched a child for pleasure
Raisman looked directly at Nassar in court as she lambasted him last week.
"Larry, you do realize now that we, this group of women you so heartlessly abused over such a long period of time, are now a force, and you are nothing," she said.
The 15-year-old Miller, one of Nassar's youngest victims -- and possibly his most recent -- declared: "I'm possibly the last child he will ever assault."
"Long after the 'Olympic gymnasts' doctor' fades into a trivia fact known only by us or a Jeopardy contestant, the word 'Nassar' will permanently be associated with child sexual abuse," the teenager said.
Kyle Stephens
Stephens was the first survivor to step to the podium during the seven days of victim impact statements as part of Nassar's plea deal.
"You used my body for six years for your own sexual gratification. That is unforgivable. I've told counselors your name in hopes that they would report you. I have reported you to child protective services twice. I gave a testament to get your medical license revoked," Stephens said.
"Perhaps you have figured it out by now, but little girls don't stay little forever. They grow into strong women who return to destroy your world," Stephens said.
Nassar didn't look at her.