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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0038b.jpg -- Pictured (L-R): Grant Gustin as The Flash and Keiynan Lonsdale as Kid Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0045b.jpg -- Pictured: Keiynan Lonsdale as Kid Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0069b.jpg -- Pictured: Grant Gustin as The Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0096b.jpg -- Pictured: Grant Gustin as The Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0117b.jpg -- Pictured: Keiynan Lonsdale as Kid Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0154b.jpg -- Pictured (L-R): Grant Gustin as The Flash and Keiynan Lonsdale as Kid Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310a_0162b.jpg -- Pictured: Grant Gustin as The Flash -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310b_0034b.jpg -- Pictured (L-R): Tom Cavanagh as Harrison Wells, Danielle Panabaker as Caitlin Snow, Carlos Valdes as Cisco Ramon, Lindsay Maxwell as Olga and Grant Gustin as Barry Allen -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310b_0060b.jpg -- Pictured (L-R): Danielle Panabaker as Caitlin Snow, Carlos Valdes as Cisco Ramon, Grant Gustin as Barry Allen and Lindsay Maxwell as Olga -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310b_0251b.jpg -- Pictured: Tom Cavanagh as Harrison Wells -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310b_0271b.jpg -- Pictured: Tom Felton as Julian Albert -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.

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The Flash -- "Borrowing Problems from the Future" -- Image FLA310b_0313b.jpg -- Pictured (L-R): Danielle Panabaker as Caitlin Snow, Carlos Valdes as Cisco Ramon, Keiynan Lonsdale as Wally West, Candice Patton as Iris West, Grant Gustin as Barry Allen and Tom Felton as Julian Albert -- Photo: Katie Yu/The CW -- © 2016 The CW Network, LLC. All rights reserved.