The last season of the BBC One series Sherlock left viewers with a lot of (spoiler alert!) questions. What happened to Sherlock? Did Watson see what he thought he saw? What was up with that red ball? And most importantly: Why are people on bikes so rude?

This teaser for the show's third season doesn't address any of those issues directly, but it does pull off a nice slow build — complete with a Watson mustache sighting — that ends with star Benedict Cumberbatch looking very much okay. Jump in and check it out for yourself.