A Lethal Swarm

A FROG Spy Thriller

By: M. H. Sargent

Narrated by: John M O'Connor

FACT: It is estimated that one million people die each year from mosquito-borne pathogens, including malaria, the West Nile virus, yellow fever, and the Zika virus. Fortunately, scientists can now genetically modify mosquitoes to help reduce the transmission of these deadly diseases.

FICTION: But what happens when rogue scientists genetically modify mosquitoes to kill people rather than save them?

In A Lethal Swarm, M. H. Sargent presents another gripping thriller that dives into the covert operations of FROG—a secret intelligence agency dedicated to preventing catastrophic threats before they materialize, regardless of the cost.

When FROG uncovers whispers of a horrifying scheme to unleash millions of bioengineered mosquitoes carrying a deadly pathogen, their elite team of spies is thrown into a globe-spanning chase as they follow a trail of murder and arson in the picturesque Swiss Alps to blackmail and kidnapping in the bustling city-state of Singapore.

However, they soon discover that they aren’t the only ones wanting to secure the deadly mosquitoes—a terrorist group is already one step ahead, leaving them no room for error. Because this isn’t just another threat—it’s a meticulously crafted plan to unleash a modern-day global plague that will kill millions.

And time is running out.

©2025 M. H. Sargent (P)2025 M. H. Sargent

Action, intrigue, and espionage pushed to the limi

I really liked it. The author skillfully combines the tension of espionage with a fast pace and plenty of twists and turns. The characters are well developed, and the story has that touch of danger that keeps you on the edge of your seat the whole time. Definitely a good narrative; you can feel the excitement in every scene.

Between shadows and betrayals

This audiobook kept me on the edge of my seat from the very first minute. What I liked most was how the story combines action with moral dilemmas, without losing momentum. John M. O'Connor's voice is perfect: firm, precise, and with just the right amount of emotion for each scene.