Johnny Maxwell Series by Terry Pratchett

It's just a game . . . isn't it?The alien spaceship is in his sights. His finger is on the Fire button. Johnny Maxwell is about to set the new high score on the computer game Only You Can Save Mankind.Suddenly, a message appears:We wish to talk. We surrender.But the aliens aren't supposed to surrender—they're supposed to die!

"Post-life citizens Breath challenged Vertically disadvantaged (buried, not short)" Johnny Maxwell's new friends not appreciate the term "ghosts," but they are, well, "dead,"The town council wants to sell the cemetery, and its inhabitants aren't about to take that lying down! Johnny is the only one who can see them, and and the previously alive need his help to save their home and their history... more"Post-life citizens Breath challenged Vertically disadvantaged (buried, not short)" Johnny Maxwell's new friends not appreciate the term "ghosts," but they are, well, "dead,"The town council wants to sell the cemetery, and its inhabitants aren't about to take that lying down! Johnny is the only one who can see them, and and the previously alive need his help to save their home and their history. Johnny didn't mean to become the voice for the lifeless, but if he doesn't speak up, who will?In Johnny Maxwell's second adventure, Carnegie Medalist Terry Pratchett explores the bonds between the living and the dead and proves that it's never too late to have the time of your life -- even if it is your afterlife! less

Twelve-year-old Johnny Maxwell has a knack for being in the wrong place at the wrong time. This has never been more true than when he finds himself in his hometown on May 21, 1941, over forty years before his birth!An accidental time traveler, Johnny knows his history. He knows England is at war, and he knows that on this day German bombs will fall on the town. It happened. It's history... moreTwelve-year-old Johnny Maxwell has a knack for being in the wrong place at the wrong time. This has never been more true than when he finds himself in his hometown on May 21, 1941, over forty years before his birth!An accidental time traveler, Johnny knows his history. He knows England is at war, and he knows that on this day German bombs will fall on the town. It happened. It's history. And as Johnny and his friends quickly discover, tampering with history can have unpredictable—and drastic—effects on the future. But letting history take its course means letting people die. What if Johnny warns someone and changes history? What will happen to the future? If Johnny uses his knowledge to save innocent lives by being in the right place at the right time, is he doing the right thing? Mixing nail-biting suspense with outrageous humor, Terry Pratchett explores a classic time-travel paradox in Johnny Maxwell's third adventure. less

Johnny Maxwell Trilogy with 3 books [Only You can Save Mankind - Johhny and the Dead - Johnny and the Bomb] in one Book