Project Megalodon

When Dr. Martin Lucas was recruited to work on the oceanic military base Omega Base Six, he had no idea of what lay ahead of him.
Tasked with gentically engineering a megalodon for military use he was the most important man on the base. That also made him a target.
Six years after a terrorist attack on the base almost cost him his life, Martin is brought back to face off against the monster he created. His shark has lain dormant, but with Omega Base Six set to be scuttled, she returns, bigger than ever and ready to protect her home at whatever cost.