ARROW WHO ARE YOU TRAILER BREAKDOWN
Laurel then uses the Canary Cry t attack team Arrow and we see Oliver say "that's not our Laurel."
then laurel says finally someone figures it out.
This confirms that this is not the real laurel that died in season 4, but with the Canary Cry it seems like that this is the Earth 2 Laurel Lance, the Black Siren who appeared on the Flash.Who knows how she got out of the metahuman cell at Star labs.It could be to do with Flash Point.
Leave your thoughts on the trailer down below, like why Black Siren is attacking team Arrow, it could do with the Prometheus storyline.As always thanks for reading, take care.