Arrowverse Crossover: 5 Best Moments From 'Elseworlds' Part 1 — Plus: How Will Oliver's Darkness Affect Barry?

“Oh, Barry, what have you done this time?”

The Arrowverse’s “Elseworlds” crossover kicked off with a body swap/quantum leap on Sunday night’s The Flash, and Oliver Queen couldn’t help but think that the scarlet speedster was behind the switcheroo. READ MORE