The Puppet Masters - by Robert A Heinlein (Paperback)

The "Invasion of Earth" is a thrilling and suspenseful tale of an alien invasion that will keep you on the edge of your seat! The slug-like creatures have come to Earth in flying saucers, attacking humans and taking control of their nervous systems.

But fear not, for a team of special agents led by Sam, Mary, and The Old Man are on the case.

With their quick thinking and bravery, they travel to Iowa to investigate a report involving a flying saucer and the disappearance of six agents previously on the case.

Will they be able to stop the invasion before it's too late? Find out in this gripping and action-packed novel!