Marvel Studios must have at least one intern dedicated entirely to Infinity Stone duty, because keeping track of their whereabouts for fourteen movies definitely feels like a full time job.

For those who need a refresher course: there are seven of the deadly, rainbow colored gems and right now we know where six of them are. Asgard is keeping watch over the Space Stone, the Nova Corps have custody of the Power Stone, The Vision is using the Mind Stone as forehead bling, the Kamar Tag has the Time Stone and we can only assume that Howard the Duck is currently using the Reality Stone as a martini coaster in the Collector’s Collection. So that only leaves one stone left to be found; The Soul Stone, and we think we may have gotten our best hint of where it might be in the Thor: Ragnarok Trailer.

The popular theory right now is that Heimdall, the stoic rainbow bridge toll collector played by Idris Elba, holds the Soul Stone. We’ve seen clues suggesting as much ever since the very first Thor movie, the biggest one being that Heimdall has glowing, orange eyes and orange is the color of the Soul Stone. But we think that by the end of Ragnarok, Heimdall is going to get a little unwanted eye surgery and the Stone will end up in the hands of Hela, the Goddess of Death played by Cate Blanchett.

For one thing, if you remember Thor’s vision bath in the middle of Age of Ultron, the God of Thunder foresaw a dark future where, amongst other things, Heimdall had gone blind. And since Ragnarok will be our last big jump into Asgardian lore before Infinity Wars it makes sense that this is the movie where Heimdall will lose those sweet, Soul Stone powered peepers. Then there’s the shot in the trailer of Hela wiping out all of Asgard with one big, orange tinted explosion. There are very few things in the MCU with that kind of destructive power and most of them are Infinity Stones. So we think that sometime early in Ragnarok, Heimdall is gonna go down and Hela will take his Soul Stone from him, paving the way for her to wipe out Asgard and be a major player in the Infinity Wars when they role around next summer.

But what do guys think? Could the Soul Stone be hiding somewhere else? Or will Hela be holding it by the end of Ragnarok? Let us know your thoughts in the comments.