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The Flash -- "Infantino Street" -- FLA322a_0114b.jpg -- Pictured: Candice Patton as Iris West -- Photo: Dean Buscher/The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0154b.jpg -- Pictured (L-R): Carlos Valdes as Cisco Ramon and Tom Cavanagh as Harrison Wells -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0170b.jpg -- Pictured (L-R): Jesse L. Martin as Detective Joe West, Candice Patton as Iris West, Grant Gustin as Barry Allen and Wentworth Miller as Leonard Snart/Captain Cold -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0212b.jpg -- Pictured (L-R): Anne Dudek as Tracy Brand and Tom Cavanagh as Harrison Wells -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0271b.jpg -- Pictured (L-R): Candice Patton as Iris West and Grant Gustin as Barry Allen -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0288b.jpg -- Pictured (L-R): Jesse L. Martin as Detective Joe West, Candice Patton as Iris West and Grant Gustin as Barry Allen -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0315b.jpg -- Pictured: Wentworth Miller as Leonard Snart/Captain Cold-- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0411b.jpg -- Pictured (L-R): Anne Dudek as Tracy Brand, Carlos Valdes as Cisco Ramon and Tom Cavanagh as Harrison Wells -- Photo: Dean Buscher/The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0450b.jpg -- Pictured: Grant Gustin as Barry Allen -- Photo: Dean Buscher/The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0055b.jpg -- Pictured: Wentworth Miller as Leonard Snart/Captain Cold -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0151b.jpg -- Pictured (L-R): Grant Gustin as Barry Allen and Wentworth Miller as Leonard Snart/Captain Cold -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0161b.jpg -- Pictured (L-R): Grant Gustin as Barry Allen and Wentworth Miller as Leonard Snart/Captain Cold -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0206b.jpg -- Pictured (L-R): Grant Gustin as Barry Allen and Wentworth Miller as Leonard Snart/Captain Cold -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0242b.jpg -- Pictured: Danielle Panabaker as Killer Frost -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0266b.jpg -- Pictured: Danielle Panabaker as Killer Frost -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0295b.jpg -- Pictured: Danielle Panabaker as Killer Frost -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322b_0305b.jpg -- Pictured: Carlos Valdes as Cisco Ramon -- Photo: Dean Buscher /The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322c_0005b.jpg -- Pictured: Grant Gustin as Barry Allen -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322c_0008b.jpg -- Pictured: Grant Gustin as Barry Allen -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322c_0101b.jpg -- Pictured: Grant Gustin as Barry Allen -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

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The Flash -- "Infantino Street" -- FLA322a_0115b.jpg -- Pictured (L-R): Grant Gustin as Barry Allen and Candice Patton as Iris West -- Photo: Katie Yu /The CW -- © 2017 The CW Network, LLC. All rights reserved.