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The Flash -- "Magenta" -- Image: FLA303a_0040b.jpg -- Pictured: Danielle Panabaker as Caitlin Snow -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303a_0117b.jpg -- Pictured (L-R): Peter Flemming as John Kane and Candice Patton as Iris West -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303a_0177b.jpg -- Pictured: Candice Patton as Iris West -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303a_0328b.jpg -- Pictured: Tom Cavanagh as Harrison Wells -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303a_0335b.jpg -- Pictured (L-R): Tom Cavanagh as Harrison Wells and Violett Beane as Jesse Quick -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303a_0379b.jpg -- Pictured: Violett Beane as Jesse Quick -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303a_0382b.jpg -- Pictured: Violett Beane as Jesse Quick and Tom Cavanagh as Harrison Wells -- Photo: Dean Buscher/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0005b.jpg -- Pictured (L-R) Candice Patton as Iris West and Grant Gustin as Barry Allen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0026b.jpg -- Pictured (L-R) Candice Patton as Iris West and Grant Gustin as Barry Allen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0040b.jpg -- Pictured: Candice Patton as Iris West -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0076b.jpg -- Pictured: Joey King as Frankie Kane -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0078b.jpg -- Pictured (L-R): Grant Gustin as Barry Allen, Tom Felton as Julian Albert and Jesse L. Martin as Detective Joe West -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0082b.jpg -- Pictured (L-R): Joey King as Frankie Kane and Tom Felton as Julian Albert -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0091b.jpg -- Pictured (L-R): Joey King as Frankie Kane and Jesse L. Martin as Detective Joe West -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0117b.jpg -- Pictured: Joey King as Frankie Kane -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0209b.jpg -- Pictured: Grant Gustin as Barry Allen -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0223b.jpg -- Pictured (L-R): Joey King as Frankie Kane and Tom Felton as Julian Albert -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image: FLA303b_0279b.jpg -- Pictured: Joey King as Frankie Kane -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Magenta" -- Image FLA303b_0299b.jpg -- Pictured (L-R): Keiynan Lonsdale as Wally West and Jesse L. Martin as Detective Joe West -- Photo: Bettina Strauss/The CW -- © 2016 The CW Network, LLC. All rights reserved.