Season 4 (The Flash: 2014)

"My name is Barry Allen and I am the fastest man alive. To the outside world, I am an ordinary forensic scientist. But secretly, with the help of my friends at S.T.A.R. Labs, I fight crime and find other meta-humans like me. But I became lost in time. It took everything in my friends’ power to bring me back. And in doing so, our world was opened up to new threats, and I'm the only one fast enough to stop them. I am The Flash."

- Introduction

The fourth season of premiered on October 10, 2017 on The CW and concluded on May 22, 2018. The season consisted of 23 total episodes during its run.