Earthweeds. Sons of Neptune, #1

At the end of the world - it's the start of something new, with origins both puzzling and terrifying. A green fog descends over every major city in the world, and the populations disappear one by one. By nightfall, every living soul in every metropolis is gone. Earth grinds to a halt. Only a few stragglers are alive in the rural countryside. When Sam and his brother return from a mountain camping trip, they find only empty city streets.
Alone, they look for any survivors to give them answers. The next day, lizards the size of Komodo dragons flood the city and attack the remaining humans. When these creatures are confronted by giant spiders, the two species fight each other for the remaining food supply.... with the humans caught in the middle. A teenage boy with electric powers - stemming from his DNA.  His brother with a strong iron will.  A college student who can understand and communicate with animals.  A scientist with a secret.  And a band of psychopaths with an agenda of their own.  Defending each other from the evils of men and creatures alike, the last humans must race to unravel the mystery of the empty cities, the swarming creatures, and the disappearance of humankind.  Invasion sparked a mystery, then a nightmare...
and finally the courage to take back our planet! "Earthweeds takes its time revealing its greatest twists and surprises, keeping readers on their toes..." - BookLife Prize, Publishers Weekly (rated 9/10 for Plot/Idea and Originality) "A fast-paced sci-fi thrill ride..." -Top2040 SciFi"Earthweeds is a fun read that moves quickly and rarely takes a breather." - Amazing Stories MagazineEarthweeds is Book 1 in the Sons of Neptune saga