Guardians of the Galaxy writer and director James Gunn has teased fans by mentioning a 'missing' Easter egg in the first movie, causing a whole heap of speculation, bizarre fan theories and pleading posts asking Gunn to reveal all.
One fan thought the Easter egg was about Stan Lee's cameo in the 2014 superhero film, but Gunn has said this isn't the hidden Easter egg.
Responding to the find, he said: "This is an actual Easter egg that hasn't been found but it is not THE Easter egg. That said, I think you deserve a No-Prize AND it shows there are still Easter eggs to be found in the #GotG films, despite the doubters."
And, to show he's serious about the whole thing, he's even offered up $10,000 (£7,500) for anyone who can prove there is no final Easter egg. So we can assume there is one, then?
Now, one eagle-eyed GotG fan has put forward his theory on the missing Easter egg and it seems pretty sound to me.
In a video uploaded to YouTube, 'Second Son' puts forward their theory and it is thorough. In the clip, titled The Last Big Easter Egg in GotG Vol. 1 Second Son lays out his case, which involves The Collector and Galactus.
The clip centres on the the scene where The Collector explains the Infinity Stones (you know, the McGuffin that's held together the Marvel Cinematic Universe, and looks to have reached a dramatic finale with Avengers: Infinity War and the forthcoming Avengers 4) to the Guardians.
In a screen grab, Second Son highlights a human face - seemingly screaming - which he claims is none other than Sentience of the Universe.
And, to be fair, the shot does look an awful lot like a panel from a Marvel comic. In the comic, the Sentience joins together with Galan of the planet Taa and they are 'reborn' as Galactus.
I know, this is a lot to take in - but bear with me, we're nearly there.
Second Son then takes a more detailed look at the planet which was left destroyed by Celestial, which, according to Second Son could be Taa.
Could this mean Galactus is about to play a part in the Marvel Comics Universe?
In the comics, Galactus is an enormous, planet-eating cosmic entity, feared by all across the galaxy and probably someone you wouldn't want to tangle with, if you could help it.
He's previously made an appearance on the big screen in the 2007 movie Fantastic Four: Rise of the Silver Surfer, although somewhat disappointingly appeared as a naff-looking cloud rather than the armour-clad demi-god comics fans had come to know.
Following Thanos' dealings with the Infinity Stones in Avengers: Infinity War, you'd have to imagine the next installment in the MCU will have to have a 'go big or go home' vibe, and frankly they don't come much bigger than ol' Galactus.
So, what do we reckon? Is this the missing Easter egg or is this a bit of a stretch? I reckon Gunn needs to put us out of our misery, don't you?