The Hellcats are a group of nine submarines tasked with an impossible mission - penetrate Japan's impenetrable minefields and decimate their merchant fleet.

With only a new experimental sonar system to guide them, the crews of these submarines face incredible odds and danger.

But they have one advantage - they are led by Vice Admiral Charles Lockwood, a dedicated commander who will stop at nothing to complete their mission.

Based on original documents and personal letters from one doomed Hellcat commander, Sasgen's account is a gripping tale of bravery and determination in the face of overwhelming odds.

Don't miss out on this thrilling story of World War II's most dangerous mission.