SPOILERY PICS AHEAD!
The two stars seemed to have run into each other in the first “crossover” event happening between the two shows.
Exec producer Andrew Kreisberg teased at Comic-Con last month that Emily‘s Felicity would be making a visit to STAR Labs in episode number four of The Flash. But don’t forget about the major crossover happening in episode eight!
Check out the first candid pics from filming below!