Book excerpt: Have you ever had a bad week? Justin Chase sure has, and this is it! Just when he thought nothing could top the diabolical disasters and harrowing humiliations of Monday, Tuesday, Wednesday, Thursday, Friday and Saturday (Zombie Apocalypse, anyone?!) along comes . . . Sunday! It’s categorically the worst! There’s a catastrophic alien invasion and the fate of the entire planet rests solely on Justin’s shoulders. (And he can’t even do one push up!) Brace yourself for the cataclysmic conclusion to the global hit series.