The Flash -- "Girls Night Out" -- Image Number: FLA405a_0032b.jpg -- Pictured: Hartley Sawyer as Dibney -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0065b.jpg -- Pictured: Danielle Panabaker as Caitlin Snow -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0074b.jpg -- Pictured (L-R): Candice Patton as Iris West, Emily Bett Rickards as Felicity Smoak and Danielle Panabaker as Caitlin Snow -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0078b.jpg -- Pictured (L-R): Candice Patton as Iris West and Emily Bett Rickards as Felicity Smoak -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0082b.jpg -- Pictured (L-R): Candice Patton as Iris West and Emily Bett Rickards as Felicity Smoak -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0091b.jpg -- Pictured (L-R): Tom Cavanagh as Harrison Wells and Carlos Valdes as Cisco Ramon -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_ FLA405a_0145b.jpg -- Pictured (L-R): Tom Cavanagh as Harrison Wells, Carlos Valdes as Cisco Ramon and Grant Gustin as Barry Allen -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0202b.jpg -- Pictured (L-R): Emily Bett Rickards as Felicity Smoak and Hartley Sawyer as Dibney -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0245b.jpg -- Pictured: Emily Bett Rickards as Felicity Smoak -- Photo: Katie Yu/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405a_0017b.jpg -- Pictured (L-R): Hartley Sawyer as Dibney and Carlos Valdes as Cisco Ramon -- Photo: Bettina Strauss/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405b_0057b.jpg -- Pictured (L-R): Jesse L. Martin as Detective Joe West and Grant Gustin as Barry Allen -- Photo: Bettina Strauss/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405b_0135b.jpg -- Pictured (L-R): Danielle Nicolet as Cecile Horton, Emily Bett Rickards as Felicity Smoak and Candice Patton as Iris West -- Photo: Bettina Strauss/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405b_0171b.jpg -- Pictured (L-R): Danielle Nicolet as Cecile Horton, Emily Bett Rickards as Felicity Smoak and Candice Patton as Iris West -- Photo: Bettina Strauss/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0013b.jpg -- Pictured: Jesse L. Martin as Detective Joe West -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0028b.jpg -- Pictured (L-R): Danielle Panabaker as Killer Frost and Katee Sackoff as Amunet Black -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0082b.jpg -- Pictured: Katee Sackoff as Amunet Black -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0122b.jpg -- Pictured (L-R): Danielle Nicolet as Cecile Horton and Emily Bett Rickards as Felicity Smoak -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0250b.jpg -- Pictured: Danielle Panabaker as Killer Frost -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0258b.jpg -- Pictured: Katee Sackoff as Amunet Black -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0307b.jpg -- Pictured (L-R): Katee Sackoff as Amunet Black and Mark Sweatman as Norvok -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0361b.jpg -- Pictured: Katee Sackoff as Amunet Black -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0417b.jpg -- Pictured: Candice Patton as Iris West -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.

The Flash -- "Girls Night Out" -- Image Number: FLA405c_0431b.jpg -- Pictured: Danielle Panabaker as Killer Frost -- Photo: Jeff Weddell/The CW -- © 2017 The CW Network, LLC. All rights reserved.