Second Life Of Thomas Weaver

This is a story of blunders and sorrow followed by an improbable solution. We all have this thought at times: 'What if I could relive this and put it right?' - the protagonist of this book got just this opportunity. Can he turn everything for the better, or is life a bit more complicated than a fairy tale?
Thomas Weaver, haunted by a teenage tragedy, lived a wasted life. He closed his eyes for what he believed was the last time in 2016 but opened them again in his teenage bedroom and body in 1976.
Now a middle-aged man in a teenage body, he sets out to fix everything he did wrong in his first life. A budding serial killer in the homeroom, a possible new romance, and high school algebra complicate his plans.