Shoot-out at Death Canyon: A YA time travel adventure in the Wild West

Time Travel Fact: Guns are not the only, nor the most effective, means of erasing an enemy

When Madison and Riley return from medieval England, there's good news and bad. The good? They succeeded in their mission to un-erase a fellow student. The bad? A stowaway from the time period turns up in Maddy's science class, seeking revenge.

The assassin tries to worm their way into Maddy's friend group and, with barbed comments and dirty tricks, force her out. Then they go further and kidnap Maddy'...