The CW Planning Another 4-Show Crossover With Is DC Shows Next Season For ‘Supergirl,’ ‘The Flash,’ ‘Arrow’ & ‘Legends of Tomorrow’

The CW is already set on doing another four-way crossover among its DC shows in the next season. Following last year’s successful crossover with “Supergirl,” “The Flash,” “Arrow” and “Legends of Tomorrow,” the network is hoping to do the same feat.

“Supergirl” executive producer Andrew Kreisberg confirmed this detail during a screening of an advanced “Supergirl” episode with the press. “The great thing about our dear friends at The CW and Mark Pedowitz picking the shows up as early as they did, [it] has allowed us to start building the schedules for next season,” Kreisberg said, adding that it’s going to be an actual four-way that will give the cast of “Supergirl” more involvement.

Kreisberg also hinted that there’s a lot entailed with planning a crossover of this size, thus early preparations are always great. “One of the big things we learned from two years ago, which made the crossovers this year slightly easier, was building in shutdown days, where shows just want dark,” Kreisberg said. “The single hardest factor in doing the crossovers is actors’ availability because the shows keep going on. We’ve got four shows and you’re basically juggling four shows’ worth of schedules.”

“The thing that we didn’t really plan on — again because we weren’t aware that we were going to switch Supergirl from CBS to The CW and it was really going to be part of it — that was the one show that actually didn’t have built-in shutdown days, so all the other ones did,” he continued. “Because the show starts on Supergirl, Melissa [Benoist] ended up being heavily in The Flash and then in Arrow. So Supergirl was the show we needed to shut down the most and it was the one we didn’t have any opportunity to. Now that we’ve gotten the early pickup and we’ve started designing the seasons, we’re building in those dark days — and actually more dark days on Supergirl than the other shows — to make it a little easier.”

It’s still unclear when The CW is going to air is crossovers next season, but last season happened during November sweeps. It was a ratings success.