Sometimes, time is running out. Sometimes, it isn't running at all. When Lex Alexander called upon his mad engineer friend for help creating a racing simulator, he expected to break a few track records. Instead, he broke time. To get the clock ticking again, he will need to travel to other timelines and alternate realities to pick up the lost pieces of his own world. Will he survive clashes with alternate versions of friends and foes? Or has time run out... literally. Quantum Shift is the seventh book in the acclaimed Big Sigma series. The only race Lex can’t afford to is the race against time.