Season 1 (The Flash: 2014)

"My name is Barry Allen, and I am the fastest man alive. When I was a child, I saw my mother killed by something impossible. My father went to prison for her murder. Then an accident made me the impossible. To the outside world, I'm an ordinary forensic scientist. But secretly, I use my speed to fight crime and find others like me. And one day, I'll find who killed my mother and get justice for my father. I am The Flash."

- Introduction

The first season of premiered on October 7, 2014, on The CW and concluded on May 19, 2015. The season consisted of 23 total episodes during its run.

Synopsis
Barry Allen was 11 years old when his mother was killed in a bizarre and terrifying incident and his father was falsely convicted of the murder. With his life changed forever by the tragedy, Barry was taken in and raised by Detective Joe West, the father of Barry's best friend, Iris. Now, over 14 years later, Barry has become a brilliant, driven and endearingly geeky CSI investigator, whose determination to uncover the truth about his mother's strange death leads him to follow up on every unexplained urban legend and scientific advancement that comes along. Barry's latest obsession is a cutting-edge particle accelerator, created by visionary physicist Harrison Wells and his S.T.A.R. Labs team, who claim that this invention will bring about unimaginable advancements in power and medicine. However, something goes horribly wrong during the public unveiling, and when the devastating explosion causes a freak storm, many lives are lost and Barry is struck by lightning. After nine months in a coma, Barry awakens to find his life has changed once again - the accident has given him the power of super speed, granting him the ability to move through Central City like an unseen guardian angel. Though initially excited by his newfound powers, Barry is shocked to discover he is not the only "meta-human" who was created in the wake of the accelerator explosion - and not everyone is using their new powers for good. In the months since the accident, the city has seen a sharp increase in missing people, unexplained deaths and other strange phenomena. Barry now has a renewed purpose - using his gift of speed to protect the innocent, while never giving up on his quest to solve his mother's murder and clear his father's name. For now, only a few close friends and associates know that Barry is literally the fastest man alive, but it won't be long before the world learns what Barry Allen has become, The Flash.

Main Cast

 * Grant Gustin as The Flash (Barry Allen) / Everyman (Hannibal Bates)
 * Candice Patton as Iris West / Everyman (Hannibal Bates)
 * Danielle Panabaker as Caitlin Snow / Everyman (Hannibal Bates)
 * Rick Cosnett as Eddie Thawne / Everyman (Hannibal Bates)
 * Carlos Valdes as Cisco Ramon
 * Tom Cavanagh as Reverse-Flash/Harrison Wells (Eobard Thawne) / Harrison Wells / Everyman (Hannibal Bates)
 * Jesse L. Martin as Joe West

Recurring Cast

 * Michelle Harrison as Nora Allen
 * Chad Rook as Clyde Mardon
 * Patrick Sabongui as David Singh
 * John Westley Shipp as Henry Allen
 * Stephen Amell as The Arrow/Al Sah-him (Oliver Queen)
 * Robbie Amell as Firestorm (Ronnie Raymond)
 * Anthony Carrigan as The Mist (Kyle Nimbus)
 * Emily Bett Rickards as Felicity Smoak
 * Wentworth Miller as Captain Cold (Leonard Snart)
 * Dominic Purcell as Heat Wave (Mick Rory)
 * Clancy Brown as Goldfinger (Wade Eiling)
 * Greg Finley as Girder (Tony Woodward)
 * Morena Baccarin as Gideon
 * Paul Anthony as Rainbow Raider (Roy Bivolo)
 * Amanda Pays as Tina McGee
 * Roger Howarth as Mason Bridge
 * Andy Mientus as Pied Piper (Hartley Rathaway)
 * Victor Garber as Firestorm (Martin Stein)
 * Malese Jow as Linda Park
 * Britne Oldford as Peek-a-Boo (Shawna Baez)
 * David Sobolov as Grodd
 * Liam Mclntyre as Weather Wizard (Mark Mardon)
 * Peyton List as Golden Glider (Lisa Snart)
 * Matt Letscher as Reverse-Flash (Eobard Thawne)
 * Danielle Nicolet as Cecile Horton
 * Fulvio Cecere as Vukuvich
 * Logan Williams as Young Barry Allen

In-Universe Guest Stars

 * David Ramsey as John Diggle
 * Brandon Routh as Atom (Ray Palmer)
 * Katie Cassidy as Black Canary (Laurel Lance)
 * Paul Blackthorne as Quentin Lance
 * Robert Knepper as Clock King (William Tockman)
 * Anna Hopkins as Samantha Clayton
 * Doug Jones as Deathbolt (Jake Simmons)

Soundtrack
On November 13, 2015, an album consisting of incidental music from the season was released digitally on Spotify and Amazon Music.