MADISON McGhee wants to act like a normal 28-year-old – but she can’t.

Twenty-one years after her beloved dad John was murdered, Madison, who was just six at the time, is still searching for his killer.

With minimal help from the authorities, the Los Angeles-based TV producer has plowed a lonely furrow to solve the coldest of cases.

Her podcast series – Ice Cold Case – depicts the nightmare of her desperate search for answers and the pain of fearing some members of her fractured family know far more than they are letting on.

“It’s super unfortunate and life-altering to have to spend my twenties investigating my dad’s murder,” she told The U.S. Sun.

“I should be exploring career options, having fun, and not spending most of my time talking about my deepest, darkest childhood trauma.”

John was killed on July 11, 2002, in Belmont County, Ohio, shot in the head while at home.

He was, admittedly, involved in some dubious activities, had a drug problem, was in and out of rehab, was a serial womanizer, and became embroiled in a series of child custody battles.

At one point, he was a dealer turned informant, handing over information that saw a number of arrests, including people from his own family.

Police looking into the murder claimed John’s death was the result of a botched home invasion. Perhaps some of his past misdemeanors counted him against him.

Yet Madison, who was initially told her dad died of a heart attack, revealed that it wasn’t until she was 16 that the awful truth reared its ugly head.

The heartbreaking mission for the truth is expertly detailed in her excellent podcast, which is set to return for season two early next year.

Madison, while undertaking her own investigation and trawling through case files, has been contacted by many people in the area at the time of her father’s death who have listened to the pod and want to help.

Ordinarily, a young TV producer shouldn’t be working part-time as a professional private investigator, but Madison has no choice.

Trying to decipher the truth, has been tough – but she’s working on it.

“There’s a lot of chatter in small towns, especially this one, and it’s hard to know what is truth and what is fabricated,” she admitted.

She has no option but to look into every rumor, every whisper in the hope someone knows something.

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“I’ve identified that there could be more going on behind the scenes at an official level that led to my dad’s murder and consequently its dismissal,” she added.

Madison admits the authorities went through the standard process following the brutal slaying of her father. They filled out a report, went to the scene, and looked for clues.

But she feels more should have been done and, that “they weren’t staying up at night wondering what had really happened.”

“Their priorities shifted very quickly,” she said.

A suspect, Daryl Smith, had a grand jury trial, but once those charges were dropped after a witness, Omar, changed his story on the stand, the case stalled and the cops moved on to, in their view, more pressing issues.

“I don’t think it was ever their intention to find more evidence,” she rapped.

Madison maintains Smith remains “a main suspect” and is horribly frustrated that Omar wasn’t trusted to tell the truth.

The fear, according to people she spoke to, was that the jury not believing Omar and Smith being let off the hook, which would then mean there couldn’t be another trial.

“I was told the authorities would rather wait to get him when they could, but then that day never came,” she said with a sigh before admitting she felt “abandoned and neglected” by the cops

That left her with no choice but to launch her own investigation, despite the personal cost becoming “ridiculous.”

Now, as she moves deeper into the case, she is becoming certain that some members of her family are hiding something.

“I think I’m onto something based on my family’s reaction,” she said.

“They’re getting really tense and anxious, and I think that that means I’m on the right path. Some are reacting that way out of fear of the truth, out of fear of their own involvement and whether that was malicious or just compliance because of fear at the time, I will not speculate on at the moment.

“If you know something, say something. And if you had said something, I wouldn’t be doing this.”

She aims to speak to some new suspects, people she believes were either involved or around at the time, and will do everything possible until the case is solved, and her dad’s memory is finally laid to rest.

“I won’t stop until I know who killed him,” she concluded. “And if someone is covering it up, I will know.”