Think you’re smart enough to match wits with Benedict Cumberbatch’s clever detective in a funny hat? Well, the BBC is giving you a chance to prove it. The network is challenging Sherlock fans to solve a live mystery, which they’ll launch via Twitter at 8 p.m. GMT tonight (that’s 3 p.m. if you’re in New York City).

Dubbed #SherlockLive, the social media mystery is a bit of a mystery itself; not many details have been released about what to expect. What we do know is that Sherlock co-creators Steven Moffat and Mark Gatiss (who plays Sherlock’s brother Mycroft) will be taking over BBC One’s Twitter feed and tweeting in character as Sherlock, where they’ll share each clue the detective uncovers. Participants will take part using the #SherlockLive hashtag, with the goal being to solve the crime before the most brilliant mind on Baker Street does. The game is on!

[h/t: Mashable]