Silent Thunder by Stephen C. Perkins

In a world ruled by Lord of Illusion – there are only predators and prey. When Christopher Burrell, a deadly assassin and maverick CIA operative, and Robert Vincent, a cagey veteran FBI agent, team up to investigate a sinister sound and light frequency experiment involving a shadowy corporation and a strange Hollywood cult, they discover a hidden non-human enemy which for centuries has fought a quiet war with silent weapons against humanity.

Category: Thrillers – Conspiracies