"The disappearance of Malaysia Airlines Flight 370 captured the world's attention and shocked everyone - [the outcome] is gut-wrenching."
The authors travelled to Malaysia to carry out interviews for the book, including with authorities and family members of MH370's pilot, Zaharie Ahmad Shah.
"For the sake of the relatives of those on the flight the truth needs to be out there. We visited the departure lounge where families sat full of excitement and anticipation waiting for their boarding call. Surely they deserve better than a cover up?"
It's been more than three months since the Boeing 777 disappeared travelling from Kuala Lumpur to Beijing with 239 people aboard.
There has been no sign of wreckage from where the plane was believed to have crashed in the southern Indian Ocean, but an extensive search has turned up no sign of wreckage.
The Australia Transport Safety Board last week issued a tender to continue the deep-water search for the ill-fated flight.