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The Flash -- "Fastest Man Alive" -- Image FLA102a_0111b -- Pictured: Grant Gustin as The Flash -- Photo: Diyah Pera/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102a_0143b -- Pictured (L-R): Danielle Panabaker as Caitlin Snow and Jesse L. Martin as Detective Joe West -- Photo: Diyah Pera/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102a_0147b -- Pictured: Danielle Panabaker as Caitlin Snow -- Photo: Diyah Pera/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102a_0191b -- Pictured (L-R): Grant Gustin as Barry Allen and Danielle Panabaker as Caitlin Snow -- Photo: Diyah Pera/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102a_0205b -- Pictured (L-R): Carlos Valdes as Cisco Ramon, Grant Gustin as Barry Allen, Danielle Panabaker as Caitlin Snow, and Tom Cavanagh as Dr. Harrison Wells -- Photo: Diyah Pera/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102a_0237b -- Pictured (L-R): Grant Gustin as Barry Allen and Danielle Panabaker as Caitlin Snow -- Photo: Diyah Pera/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0031b -- Pictured: Rick Cosnett as Detective Eddie Thawne -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0078b -- Pictured: Rick Cosnett as Detective Eddie Thawne -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0107b -- Pictured: Jesse L. Martin as Detective Joe West -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0132b -- Pictured: Tom Cavanagh as Dr. Harrison Wells -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0210b -- Pictured (L-R): William Sadler as Simon Stagg and Jesse L. Martin as Detective Joe West -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0242b -- Pictured (L-R): Rick Cosnett as Detective Eddie Thawne and Candice Patton as Iris West -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102b_0323b -- Pictured: Grant Gustin as Barry Allen -- Photo: Cate CameronThe CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102c_0010b -- Pictured: Candice Patton as Iris West -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102c_0037b -- Pictured: Grant Gustin as Barry Allen -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102c_0097b -- Pictured (L-R): Candice Patton as Iris West and Grant Gustin as Barry Allen -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102c_0186b -- Pictured: William Sadler as Simon Stagg -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102c_0204b -- Pictured: Tom Cavanagh as Dr. Harrison Wells -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Fastest Man Alive" -- Image FLA102c_0443b -- Pictured (L-R): Danielle Panabaker as Caitlin Snow, Tom Cavanagh as Dr. Harrison Wells, and Carlos Valdes as Cisco Ramon -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0110b -- Pictured: Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0193b -- Pictured (L-R): Grant Gustin as Barry and Carlos Valdes as Cisco Ramon -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0248b -- Pictured (L-R): Grant Gustin as Barry Allen and Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0250b -- Pictured (L-R): Grant Gustin as Barry Allen and Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0307b -- Pictured: Grant Gustin as Barry Allen -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0357b -- Pictured (L-R): Emily Bett Rickards as Felicity Smoak, Danielle Panabaker as Caitlin Snow, and Carlos Valdes as Cisco Ramon -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0397b -- Pictured: Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104A_0403b -- Pictured (L-R): Tom Cavanagh as Dr. Harrison Wells, Danielle Panabaker as Caitlin Snow, Carlos Valdes as Cisco Ramon, Emily Bett Rickards as Felicity Smoak, and Grant Gustin as The Flash -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0072b -- Pictured: Wentworth Miller as Leonard Snart -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0108b -- Pictured: Wentworth Miller as Leonard Snart -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0237b -- Pictured: Grant Gustin as The Flash -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0254b -- Pictured (L-R): Emily Bett Rickards as Felicity Smoak and Grant Gustin as The Flash -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0263b -- Pictured: Wentworth Miller as Leonard Snart -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0283b -- Pictured (L-R): Wentworth Miller as Leonard Snart and Carlos Valdes as Cisco Ramon -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0323b -- Pictured: Wentworth Miller as Leonard Snart -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0328b -- Pictured (L-R): Carlos Valdes as Cisco Ramon, Danielle Panabaker as Caitlin Snow, and Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0367b -- Pictured (L-R): Carlos Valdes as Cisco Ramon, Danielle Panabaker as Caitlin Snow, and Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0369b -- Pictured: Carlos Valdes as Cisco Ramon -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_0378b -- Pictured (L-R): Danielle Panabaker as Caitlin Snow and Emily Bett Rickards as Felicity Smoak -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.

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The Flash -- "Going Rogue" -- Image FLA104B_BTS_0430b -- Pictured (L-R): Director Glen Winter, Grant Gustin as Barry Allen, and Wentworth Miller as Leonard Snart -- Photo: Cate Cameron/The CW -- © 2014 The CW Network, LLC. All rights reserved.