
She's working with Zoom to take over Earth-1, and she's more powerful than the Earth-1 Laurel Lance ever was. This Laurel Lance is from Earth-2, also known as Black Siren.

However, this isn't the Black Canary that everyone in Central City once knew. Laurel Lance makes her presence known in Central City by unleashing screams that can take down buildings. The villain of the week happened to someone from everyone's past. However, this isn't currently happening in Central City, that they know of, so Cisco believes that this vibe is coming from the future. At the end of the episode, Cisco's vibe continues and he sees Earth-2's Central City being torn apart by the same rifts they use to travel between worlds. He keeps seeing dead birds on the sidewalk. Throughout this week's episode, Cisco begins to vibe himself in a city, presumably Central City. Throughout the season, Cisco's vibe power has gotten stronger and stronger. It's unclear as to whether this is psychological and all in her head, or if Zoom actually did something to her. As the episode goes on, however, full images of Zoom start appearing and only Caitlin can see them. Caitlin begins to see images of her former captor and, at first, he's transparent. However, Zoom may have done something to her.

Caitlin chose to go back to her friends, as any sane person would.

Last week, Zoom gave Caitlin the choice to leave or stay with him, before it was revealed that the villain brought his own gallery of rogues to Central City. Meanwhile, a face from the past comes to Central City, and is more powerful than they could ever imagine. Flash and the team from STAR Labs have to figure out a way to stop them. Zoom has released an army of metahumans from Earth-2.
