After the events of Season One.
The singularity opens over Central City, and Barry manages to close it, but not before someone unexpected falls through from the other side. From an Alternate Universe, Barry Allen's biological sister Moira Allen falls through the worm hole and gets stuck, in a world where practically everything is the same as her own, only she never existed. She's not exactly helpless, having been affected by the accelerator explosion in her world, which gave her telekinetic powers; But when you blow a hole in the fabric of reality, it's hard to patch up. And even though there isn't a gaping black hole in the sky, things still seem to be slipping through the cracks. When The Flash's greatest enemy returns to exact his revenge on his sister, things get dangerous fast. Can Barry and his sister stop Eobard Thawne from destroying their lives once again, or will their new familial bond make them weak enough for him to win?
Barry Allen is an ordinary forensic scientist at the Central City Police Department. He was in his lab watching the news during a thunderstorm as the Particle Accelerator was being turned on. Everything started going bad, the power was cut and the Particle Accelerator. The Particle Accelerator unleashed unknown energy that hit Barry. Nine Months later he woke up with super speed. With the help of his friends at S.T.A.R Labs he became Central City's superhero, The Flash. Barry slowly started falling for Caitlin, a girl apart of Team Flash and his personal doctor, but never had the nerve to tell her. One day his secret slips out and it comes as a shock.
Warning - This was my first book so it's really bad and all over the place