We’re often told by security professionals that the widespread adoption of surveillance cameras can hold officers accountable and provide valuable evidence for court proceedings. One Wisconsin woman is living proof that sometimes CCTV footage, used in conjunction with other evidence, really can serve the cause of justice.

Wisconsin resident Tanya Weyker was involved in a serious car crash with Milwaukee County Sheriff’s Office Deputy Joseph Quiles’ vehicle in February of last year. Quiles rolled through a stop sign and “T-boned” her car, breaking her neck and wrecking her vehicle. Ever since, the 25-year-old woman has been trying to regain a semblance of her former life.

To add insult to injury, until quite recently, Weyker was facing drunken driving charges stemming solely from Quiles’ testimony at the time of the crash. Weyker was arrested after the accident on the charge that she appeared to be intoxicated—even though the arresting officer could not administer field sobriety tests due to the serious nature of Weyker’s injuries. All the while, undiscovered surveillance footage showed that Quiles, not Weyker, had caused the crash.

“I explained to him my eyes were red and glassy because I was crying,” Weyker stated. Her attorney, Todd Korb, further noted the surprising nature of this arrest, given the lack of evidence that she was drunk at the time. “I can’t say it is necessarily a cover up, but it is suspicious,” Korb told CNN.

Video footage from a nearby airport surveillance camera recently surfaced, showing that the officer caused the crash by failing to stop at a stop sign. Furthermore, the results of drug and alcohol tests administered at the hospital became available and confirmed Weyker’s sobriety at the time of the crash.

An internal investigation at the Milwaukee County Sheriff’s Office launched after the incident further vindicated Weyker. In a recorded interrogation, the officer admits that he was at fault for the accident.

Internal Investigator: “You believe that you probably did roll?”

Deputy Quiles: “Yes. Yes, I do.”

Internal Investigator: “And because of that, you believe you were at fault for this accident.”

Deputy Quiles: “That’s correct.”

Quiles has never officially been disciplined for misreporting the accident. Rather, he was suspended for nine days for violating traffic laws and damaging county equipment. As of March 2014, the deputy was still listed as active in the airport division of the Sheriff's Office. He has filed for permanent disability, but his claim is still pending before the County’s Employee Retirement System, according to The Raw Story.

Reports written at the time of the crash described Quiles’ injuries as minor, and he was treated and released from a hospital following the wreck. Nevertheless, since the crash, Quiles allegedly told a judge in a child support hearing that he was on medical leave, The Raw Story reports.

Since Quiles' admission, Weyker has been seeking compensation for her medical bills from the county, which she claims are greater than $1 million, although a state law caps such awards against government agencies at $250,000. She has also filed a separate lawsuit against the arresting officer and might pursue a civil rights lawsuit against the county (which is not subject to a damages cap).

Neither the Milwaukee County Sheriff’s Office nor Weyker’s attorney, Todd Korb, responded to Ars' requests for comment on Thursday afternoon.