The Flash TV series pilot has leaked online.
Released over three months before its intended premiere date, the superhero drama stars Grant Gustin as Barry Allen - aka DC Comics hero The Flash.
The CW only recently confirmed that The Flash would launch on US television on Tuesday, October 7 at 8/7c.
John Wesley Shipp - who previously portrayed The Flash in a cult '90s series - has been cast in the new adaptation, recurring as Barry's father.
Candice Patton, Jesse L Martin and Tom Cavanagh will also appear in the series, from the team behind Arrow.
Executive producer Greg Berlanti has told Digital Spy that the spinoff will have more of a "sci-fi bent" than its parent series.
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Watch a clip from The Flash below:
