We have no idea why this is happening, but it is, and we have now realised that New Girl and Brooklyn Nine-Nine is the TV crossover we never knew we wanted. Both shows are made by Fox, and normally sit side by side on their Tuesday night schedule, while they're also two of the network's longest running comedies.

News of this upcoming mash up was announced at the Television Critics Association's summer press tour, with New Girl creator Elizabeth Meriwether saying; "The crossover episode has historically been the artistic high point of any show that has dared to attempt it."

"Maybe you remember Blackout Thursday on NBC, or even further back the infamous Alf/Gilligan’s Island crossover of the late 1980s. New Girl and Brooklyn Nine-Nine will proudly and humbly go where few shows have gone since the 1990s.

"We know we have big shoes to fill, and we look forward to disappointing everyone. There’s a 50 percent chance Alf will also be in both episodes. But there’s also a 50 percent chance that is a lie."

It's not the most obvious of collaborations, considering New Girl is set in a loft apartment in LA and Brooklyn Nine-Nine is, well, a police station in Brooklyn obviously enough. However it's thought the episode will take place in New York, so we're imagining Jess and the gang head to the Big Apple and find themselves in some trouble with the law.

Brooklyn Nine-Nine co-creator Dan Goor joked that this crossover was simply 'just the first step'; "Stay tuned for our two casts to do a soulful R&B number on Empire, co-anchor the Fox 10 O’Clock News and connect for a touchdown on Fox NFL Sunday."

He went on to say; "But in all seriousness, we’re all huge fans of New Girl here at the Nine-Nine, and we’re excited to see our characters interact and to work with their incredible writers and producers. And also to see what their craft services are like, compared to ours."

The one-hour episode is set to air stateside on Fox on Tuesday, Oct. 11, so hopefully it will make it over this side of the pond fairly soon after.