The Flash -- Image Number: FLA_S4_8x12.jpg -- Pictured (L-R): Carlos Valdes as Cisco Ramon/Vibe, Grant Gustin as The Flash and Jessica Camacho as Gypsy -- Photo: The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0007b.jpg -- Pictured (L-R): Carlos Valdes as Cisco Ramon, Jessica Camacho as Gypsy, Grant Gustin as Barry Allen and Candice Patton as Iris West -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0020b.jpg -- Pictured (L-R): Carlos Valdes as Cisco Ramon and Jessica Camacho as Gypsy -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0020b.jpg -- Pictured (L-R): Carlos Valdes as Cisco Ramon and Jessica Camacho as Gypsy -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0084b.jpg -- Pictured (L-R): Danielle Panabaker as Caitlin Snow and Tom Cavanagh as Harrison Wells -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0098b.jpg -- Pictured: Danielle Panabaker as Caitlin Snow -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0118b.jpg -- Pictured (L-R): Candice Patton as Iris West and Grant Gustin as Barry Allen -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0278b.jpg -- Pictured (L-R): Grant Gustin as Barry Allen and Candice Patton as Iris West -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420a_0334b.jpg -- Pictured: Tom Cavanagh as Harrison Wells -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0002b.jpg -- Pictured (L-R): Kim Engelbrecht as The Mechanic and Neil Sandilands as Clifford Devoe -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0119b.jpg -- Pictured: Kim Engelbrecht as The Mechanic -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0131b.jpg -- Pictured: Kim Engelbrecht as The Mechanic -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0199b.jpg -- Pictured: Jessica Camacho as Gypsy -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0312b.jpg -- Pictured: Jessica Camacho as Gypsy -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0531b.jpg -- Pictured: Neil Sandilands as Clifford Devoe -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved

The Flash -- "Therefore She Is" -- Image Number: FLA420b_0677b.jpg -- Pictured: Neil Sandilands as Clifford Devoe -- Photo: Jack Rowand/The CW -- © 2018 The CW Network, LLC. All rights reserved