The Mine of Resentment. The Sound of Jealousy, #3

A deadly secret should have stayed buried. After the collapse of the controversial Project Hummingbird, former government scientist Johnathon Frobrisher is trying to rebuild his life far from the shadows of classified research. But when cryptic messages from Russia begin appearing on his phone and his former colleague dies under suspicious circumstances, the past refuses to stay forgotten. Meanwhile, Amy Picket finds herself caught in a dangerous web of interrogation, deception, and international intrigue.
As foreign agents, rogue operatives, and ambitious journalists race to uncover the secrets of a revolutionary sound-based weapon, old loyalties are tested and hidden betrayals come to light. From the quiet villages of Suffolk to the streets of Moscow, The Sound of Jealousy 3 is a gripping thriller of espionage, technology, greed, and revenge-where the echoes of past decisions could reshape the future of global security.