The Seekers by Dash

Every twenty years, the children go missing.

Billy is a 7 year-old synesthete with a secret: He can stop time. Somehow, somebody knows and they are after him. With the help of a strangely well-connected neighbour and family friend, he manages to escape and grows up living off the grid, learning how to protect children across the country, training with an organisation calling themselves the Hunters.

Little Kathy is also a Synee. In 1989 she creates Unicorn, the most advanced AI the world has ever seen. Inevitably she ends up working for the Company, whose credits include inventing a cure for the common cold.

Balan is a cold-blooded killer. No-one knows where HE comes from.

Twenty years later the Seekers return, and Billy and Kathy find themselves on opposing sides of a war that threatens to transform humanity itself. Will Unicorn help them? Who is the Man in Black? Will Billy have to make the ultimate sacrifice? Will Kathy have to help him? Where are their parents in all of this?