A laboratory accident endows a police scientist with the ability to move at superhuman speed which he uses to battle a menacing gang as a superhero.
Homeless people are disappearing/dying. But no one can find the bodies. Tina's friend comes to town for a visit.
The corrupt District Attorney Thomas Castillo hires a private eye named Megan Lockhart to find out the Flash's identity. He then blackmails Barry to work for him, or he'll expose his secret.
Central City Museum prepares to receive a valuable historical object. A group of specialists try to steal it.
Someone spreads graffiti, and messages asking to meet "Flash" at a church. Barry goes to the church. Shortly after that, he begins to experience black outs and memory losses.
A bank robber escapes from prison. He goes back to Central City to get his money and revenge on the cop who busted him, Henry Allen, Barry's father.
A reporter is killed as he's researching a drug story. Barry tries to help two homeless kids.
A judge is killed, the killer sends the victim a part of a medal before he dies. When a former DA is killed, Barry finds a connection. Garfield was the arresting officer on the case, when his girlfriend/fiancée is shot, Garfield takes it personally. Flash must stop him before he crosses the line. Tina gets a job offer that would send her to California.
The Ghost, a villain from 1955 emerges from a deep freeze, intent on continuing his plan to extort money from the city. Nightshade comes out of retirement to help the Flash stop him.
An invisible man gets into Star Labs, and releases a neurotoxin with Tina inside the lab. Then he starts killing scientists who worked on the project. Flash must find the invisible man and save his friend.
A jazz musician friend of Julio's is about to be executed. An hour before the execution, a friend calls and says he has evidence that could exonerate their friend. Before Barry can contact him, he disappears. They have less than an hour to save a condemned man.
An insane magician wreaks havoc throughout Central City as the maniacally clever Trickster.
Barry is having trouble sleeping. Tina tries to use bio-feedback to help him, but it back fires on Tina. She joins a gang, and she's able to hold Flash at bay with her knowledge of his strengths and weaknesses. Barry has got to find a way to save his friend.
Barry tries to help a young woman. She found out about her husband's criminal life, and is trying to escape from him. She takes their daughter with her, but he wants them back.
Barry considers moving, after Pike is acquitted of his brother's murder. Pike launches a missile to kill the Flash, who is sent 10 years into the future where Pike is now Mayor. The Flash's powers are now unstable and Tina refuses to help him because she blames him for leaving. He's got to find a way to get back to his own time.
There's a new vigilante in town, the Deadly Nightshade, who fights crime by killing criminals. The Flash and the original Nightshade team up to take him down.
The Flash is targeted by a hit-man who uses cold based weaponry.
A scientist and his business partner are trying to develop a being with super speed, their attempts fail. They manage to clone the Flash. Their creation learns quickly, but is emotional moral equivalent of a child. Barry must stop his twin.
A battery is stolen by a criminal calling himself the Mirror Master. He soon steals a crystal from Star Labs. Tina will get fired if they can't recover the crystal. Tina's mother comes for a visit, and an old friend of Barry's also stirs up trouble.
A small time crook gets a hold of a device that puts people to sleep. He goes on a spree while the people are unconscious. He has a plan to knock out the entire city, it's up to the Flash to stop him.
An android built by the government to use an assassin refuses to obey her orders. She escapes, and is befriended by Tina and Barry.
With the help of an insane admirer who wants to be his sidekick, the Trickster escapes from police custody and places the Flash under his mind control.
