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Barry Allen, a police scientist is working one night during a terrible thunder storm when a bolt of lightning crashes through the lab window, electrocuting Barry and dousing him in chemicals. Barry survives the accident, and soon learns that he is now able to move at almost incomprehensible speed. Meanwhile Nicholas Pike, an ex-cop turned gang leader, is seeking revenge against Barry's brother Jay. With the help of Tina McGee, a scientist who works with the ultra-advanced Star Labs, Barry constructs a suit that will withstand his super speed and also conceal his identity so that Pike's men won't retaliate against his loved ones. Now Barry must find a way to stop Pike before it is too late.

Homeless people are dying and their bodies are disappearing. Tina rekindles a relationship with a former colleague who is an expert in genetic engineering.

A corrupt D.A. hires a private investigator to learn the Flash's secret identity and then tries to blackmail him into working for the D.A.

While arranging security at the Central City Museum, Barry is reunited with an old girlfriend and a former mentor.

A mad scientist uses the Flash as a supernatural force.

A murderer escapes from prison to find his loot and kill Barry's father, the cop who put him away.

An orphan boy has information that incriminates a 1960s cult figure who is trying to make a comeback.

Pieces of a broken medallion are the only clues to an unknown assassin who is on a deadly rampage in Central City.

Barry befriends Doctor Desmond Powell, who was once a superhero called "Nightshade." When The Ghost, Nightshade's old arch-enemy, returns, Powell must return to his hero ways.

Barry finds himself up against an unseen criminal who traps Tina and her boss in the lab.

When Julio's old friend - a jazz musician accused of killing his wife years ago - is scheduled for execution, Barry and Julio race against the clock to prove his innocence.

Barry must protect his old girlfriend, Megan Lockhart, from an obsessed, maniacal criminal who calls himself "The Trickster."

When Barry has nightmares about Tina betraying him, she puts them both under her scanner; but something goes terribly wrong. His dreams are transferred into her mind and now she thinks that she is a gang member.

Barry must protect a woman and her child from her Criminal ex-husband.

Jay's killer, Nicholas Pike, tries to destroy the Flash with a missile, but instead sends Barry hurtling ten years into the future, where "Mayor" Pike has turned Central City into his criminal empire in Barry's absence.

The Flash and Nightshade team up once again as they go up against a Nightshade imposter.

Captain Cold, who freezes his victims to death, is contracted to kill the Flash.

A scientist clones Barry. The clone is physically perfect but emotionally it is still a child.

Barry meets an old classmate and gets involved in a scheme to rip off Star Labs.

When a "presumed to be dead" criminal's body disappears, Barry is suspected. The criminal has invented a machine that makes anyone who hears it's strange sound waves fall into a deep sleep.

Barry and Tina befriend an Android who's running from a group of assassins wanting to use her as a deadly weapon.