Do Katie Cassidy & Stephen Amell Get Married on 'Arrow's 100th Episode Tonight?!

Katie Cassidy is back on Arrow tonight — and she’s getting married to Stephen Amell!

In the third episode of the Arrow-verse crossover, Oliver wakes up to a life where he never got on The Queen’s Gambit.

Everyone is alive — his parents Robert and Moira Queen, even Laurel, who he’s marrying that night!

Everything seems perfect, but Oliver starts to notice small imperfections that make him question this new reality.

Meanwhile, Felicity (Emily Bett Rickards) and the recruits take on a new threat with help from The Flash (Grant Gustin) and Supergirl (Melissa Benoist).

This marks Arrow‘s 100th episode, so be sure to watch it TONIGHT, Wednesday, November 30th @ 8PM ET/PT on the CW.