If you haven’t seen tonight’s Elementary, stop reading now. Spoilers to follow.

It finally happened. Twelve episodes into CBS’ modern day Sherlock Holmes series Elementary, Moriarty appears. Well, almost.

Elementary doesn’t follow the literary character’s trajectory as closely as another updated version, the BBC’s Sherlock. But it would be hard to imagine a Holmes who doesn’t face Moriarty — his greatest foe from Sir Arthur Conan Doyle’s novels. Many recent adaptions of Sherlock Holmes — including the aforementioned BBC show, and the Robert Downey Jr. movies — use Moriarty as the big bad. So it felt like only a matter of time before Elementary went down that path.

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