Shannon Price is putting herself to the test. 

After years of speculation about Price’s possible involvement in her ex-husband Gary Coleman’s sudden death, Price takes a lie detector test in the upcoming A&E show A&E show “Lie Detector: Truth or Deception.”

In the Sunday premiere episode, former FBI agent George Olivo asked Price if she caused Coleman’s fatal fall — and the lie detector test indicated “deception” after she denied it.

 “You failed the exam regarding Gary’s fall,” he said, per People. “There’s two things I know for sure, Shannon. One, you were not completely honest with me yesterday during this polygraph section.”

“And two, the other thing I know that’s 100% certain is that there is more to this story that hasn’t been told. The body never lies. The body always tells the truth. And your body on that lie detector test spoke loud and clear, there’s something that caused you to fail this test.”

Coleman, who was below 5 feet tall due to treatment for a lifelong kidney disease, was best known for “Diff’rent Strokes.” He married Price in 2007, but divorced in 2008. Following their split, the exes continued living together. 

In May of 2010, when Coleman was 42, he fell in their Utah home and had an intracranial hemorrhage.

Price alleged that she found him after his fall. It was ruled an accident, and Price was never charged with a crime.

In the Peacock documentary “Gary,” several of Coleman’s friends spoke out. 

Darren Nord said Coleman’s death was “suspicious,” while his former manager, Dion Mial, said of the tragedy, “We were absolutely stumped because there were way too many questions with no answers.”

“The fact that people come out and say, ‘She murdered Gary. She pushed him down the stairs.’ That really hurt me,” Price said in the film.

When Coleman was rushed to the hospital after his fall, Price did not accompany him.

“I was not in the right frame of mind to have gone with him,” she explained. “I was frantic. I was stressed. Anxiety. Sad. Just stuff like that, that any normal person would feel.”

Two days after being placed in a medically induced coma, Price removed Coleman from life support.

Coleman’s ex-girlfriend, Anna Gray, said Price “was more worried about herself than the person she was calling 911 for.”

Gray also questioned why Price let doctors take Coleman off life support after just two days, saying that Coleman’s wishes were to be kept alive for two weeks in the event of an incident like that.

However, Price countered that claim.

“On the medical directive, he said if there were two or more doctors that stated that he’s not gonna come out of it, then to take him off life support,” she alleged. “There were enough doctors and medical staff that told me his condition and told me he wasn’t gonna get better.”

On the new A&E series, Price said she was “nervous” to hear the results of her polygraph test. 

During the test, former FBI agent Olivo asked if she ever struck Coleman. 

While she replied “no,” the findings were inconclusive.

“I’m not going to say that you passed that test, because you didn’t,” Olivo said. 

Price replied, “I would never hurt him in that manner or that sense, because his life was so fragile. Daily life was a struggle for him, and I would never want to hurt him.”

Olivo also questioned Price about whether she intentionally withheld proper aid from Coleman in the aftermath of his fall. 

She denied it, but the lie detector test results were not conclusive, either. 

“That, statistically, raises a little bit of an eyebrow,” Olivo said. “Then again, you’re the same person sitting there who’s still nervous and who’s still a bit distracted.” 

He added, “But here’s the way I look at it, this question having to do with you doing everything that you could possibly do for Gary when he fell, when you called 911, is an issue that you’ve had in your mind for 14 years, and it’s still not resolved in your mind.”

Although she failed the polygraph test, Price told host Tony Harris that she is at “peace.” 

“There is a reason I am not in prison. There is a legit reason for that,” she explained. “It’s because they did a thorough investigation.”

“There’s also a thing called lack of evidence,” Olivo noted. “You say you have nothing to hide. I say you know exactly why you failed this test. Sadly, my professional opinion is the truth is not on your side today.”

Price said she wasn’t surprised. “I figured it wouldn’t be.” 

Olivo quipped: “Because you already knew you were gonna fail, and you know why you did.”

“Lie Detector: Truth or Deception” premieres Sunday, July 10 at 9 p.m. on A&E.