Warning: This post contains spoilers fromThe Flashs Elseworlds, Part One, which aired Sunday night.
Read at your own risk!
Barry and OliversFreaky Friday-like predicament inElseworldswill have an effect on Barry later this season onThe Flash.

Credit: Katie Yu/The CW
He promised that he would and would always reveal his true face to her.
The Flashshowrunner Todd Helbing told reporters at a screening of the crossover.
Before the climactic battle against Amazo, Elseworlds, Part One gave viewers an amazing callback tothe first crossover.

Shane Harvey/The CW
This exchange was one of Amells favorite moments of the crossover.
The Kent-Farm set scenes also introduced bothTullochs Lois Laneand the iconic Clark-and-Lois relationship into the Arrowverse.
Weve dreamed of having Lois Lane be onSupergirl.
Weve talked about her since the beginning, so that was great.
It was thrilling to really read their first scenes inFlashand to kind of feel Lois Lane.
Working with Davies was another highlight of the crossover for Amell.
Elseworlds continues on Monday at 8 p.m.
ET withArrowand concludes the following night at 8 p.m.
ET withSupergirlon The CW.