A North Ayrshire woman's book about how she took on the creators of the world's biggest financial fraud will be launched in Irvine this Friday.

Jennifer McAdam will be signing copies of her book Devil's Coin on August 11 in Irvine's Riverside Hotel.

The astonishing book tells the true story of how the coal miner's daughter took on the gangsters and fraudsters behind the scheme and helped the FBI to convict them.

Jennifer lost thousands to the cryptocurrency OneCoin Ponzi scheme which conned an estimated £4billion from people all over the world.

She also persuaded friends and family to invest £220,000 before realising the whole thing was a scam. She lost all her money.

Jennifer started a support group on Facebook for victims, starting with 13 members who were her friends.

But soon people were joining from all over the world and since then Jen has been fighting to get justice for all those who lost their precious savings to the scam.

She said: “I didn’t realise until it happened to me, how important justice is when the authorities are turning their back on you.

“That’s why I decided to write the book, as a way of self healing and to raise awareness, to bring victims justice.”

To protect her family from threats made by cult-like OneCoin fanatics and shadowy Russian mobsters, the 50-year-old has kept her true location out of the media.

The crypto fraud was led by Bulgarian-born Ruja Ignatova, who disappeared in 2017 after being tipped off about increasing police investigations about OneCoin.

She has never been found, with some claiming she was murdered by gangsters to hush her up.

Ignatova is still on the FBI's 10 most wanted list with a $250,000 reward for information leading to her arrest.

In 2019, her brother Konstantin Ignatov pleaded guilty to fraud and money laundering in connection with the scheme.

Jennifer will launch her book with a signing at the Riverside Lodge Hotel, in Irvine on Friday, August 11 from 1pm to 3.30pm.