These are five geeky details that will make question  everything you thought you knew about Star Wars, and make you stop and think next time you see the movies.

#5: The hallway

You can’t deny it. Rey is standing in the same hallway as Luke was, though it got some major upgrades. The hallway in the third picture is slightly different but still bears resemblance. Whether it has any significance is unknown, but it is worth keeping an eye out.

#4: Maz’s history

You probably already spotted the Mandalorian logo on the banner in the top center, and Boba Fett’s symbol next to it. But other flags have strange and unexplained logos on them. Suns, fighters, and what looks like a sketch of a distorted ear can be seen on some, and others are hidden from view. Some fans suggest that the castle was a Jedi Temple, which would explain why Rey got a Force vision so easily there. Others think it was another non-Force using society Maz was a part of, their logo being displayed directly above the Mando skull in blue. Hopefully The Last Jedi will explain.

#3: Voices of the past

Rey’s vision might have been the most interesting and mysterious scene in The Force Awakens. There are a lot of things to dissect in a very short period of time, but what stands out the most is the voices that can be heard in the background. It doesn’t take a lot to hear Obi-Wan’s voice saying “Rey, these are your first steps.” But if you listen carefully, you can hear Luke screaming as Vader cuts his arm off, Yoda lecturing him on Dagobah, and Vader’s mechanical breathing. Some even claim to hear the Emperor’s voice, but that might be a little far-fetched.

#2: The Skeleton Effect

That sounds creepy, and it is. In Return of the Jedi, you might have noticed some strange reflections in Vader’s helmet right after he dumped the Emperor into a bottomless pit. If you look closely or just pause video, you’ll see that the reflections clearly outline a skull. If that wasn’t weird enough, you can see the same thing in Windu’s face as he’s being burned by the Emperor, and that can’t be a reflection. What it is and how lightening creates it remains a mystery.

#1: Foreshadowing of Anakin’s fall

The “Squid Lake” bubble writhes and swirls during the performance, but as Palpatine tells the uplifting story of the murder of Darth Plagueis, something more sinister begins to appear–the top of Vader’s helmet. As he continues, you may even hear Vader’s breathing for a second or two. Later, as Anakin kills Dooku, the same distorted breathing can be heard clearly.