Books about the life and times of Irish mobster Whitey Bulger are a cottage industry, so will you be surprised to learn another is on the way?

Tom Foley, the former head of the Massachusetts State Police who led the investigation that led to murder charges being filed against the mobster, has reportedly signed a deal to write his own insider’s account of the Boston gangster's rise and fall.

Titled "Betrayal," the book will focus on Foley’s 20-year pursuit of Bulger and his discovery that the FBI not only protected him, they allowed his criminal empire to thrive.

According to a report in the Boston Herald, Foley’s advance for the book is north of $250,000.

"This will be the real true story of what went on, and there’s nobody who can tell that story like I can," Foley told the Herald.

Foley said his book will focus on what he called the FBI’s mishandling of Bulger.

"When I said this would be about what investigators ran into on a daily basis from the government, they jumped all over it," he said.

"We’re going to tell the whole thing, including the good bad guys and the bad good guys."

The tell-all book is expected to be completed within the year.

Investigators to write tell-all book on FBI’s most wanted James ‘Whitey’ Bulger