Showing The Eyes of the Killer Robot by John Bellairs

Decades ago, Evaristus Sloane invented a baseball-playing robot. It could pitch a fastball at a hundred and ten miles per hour, but it also had big, vacant, blue glass eyes that gave Johnny Dixon’s grampa the willies.

Now, fifty years later, in the fifth book of the Johnny Dixon mystery series, Johnny’s friend Professor Childermass puts the robot back together. It’s only after he puts its chilling eyes back in their sockets that the professor realizes his mistake. An evil killing machine has been awakened. Soon, Johnny gets kidnapped as the final part of Evaristus Sloane’s plan to bring his robot to life--using Johnny’s eyes.

Can the professor and Fergie make it to Sloane's mansion in time to save Johnny? Can they overcome the evil wizard’s most horrifying creation?