'Rogue One' spoilers: Here's one Easter Egg that will be hard to miss

Those presold tickets for "Rogue One: A Star Wars Story" can be finally put to use as Lucasfilm Ltd. and Disney finally pull the curtain to the anthology movie. But for those who were lucky enough to have already checked the film out whether during the premiere night last weekend of the special screenings after, reactions suggest to get everyone's eyes peeled as the film is abundant of goodies for lore hard cores.

Spoilers for those who have yet to catch the flick. Proceed with caution.

Given that director Gareth Edward film is an open "Star Wars" die hard, he cleverly put in nuggets of information as a way to treat those loyal followers who gobble up any morsel of content from the franchise.

For example, talks of the Force, which has been a lore trait has been incorporated in the movie despite having no Jedi except for a passive callback to Obi-Wan Kenobi (Sir Alec Guinness). Rebellion movers, Mon Mothma (Genevieve O'Reilly) and Bail Organa (Jimmy Smits), adoptive father of Leia (Carrie Fisher) both do their parts in the story. Viewers also get the chance to see Ponda Baba and Dr. Evazan before Ben traumatized them in Mos Eisley in "Star Wars: Episode IV — A New Hope" and some "Star Wars Rebels" Easter Eggs are peppered throughout the film. Even the infamous blue milk makes a brief cameo as Jyn (Felicity Jones), Lyra (Valene Kane) and Galen (Mads Mikkelsen) rolls out their plan to get out of the Empire's clutches

However, one particular appearance in the flick has left fans in shock as it combines technological genius as well as smart narrative decision. Grand Moff Tarkin, played by the late Peter Cushing, returns to the screen in a very satisfying way; the only question is how, given that the veteran actor has died over two decades ago.

Washington Post reveals that the elaborate work in bringing Wilhuff into life involves tapping actor British actor Guy Henry who presumably was the canvass in Cushing's very believable cameo. The appearance has long been rumored and it is safe to say that should Henry eventually played the younger Galactic employee, fans might give him the pass especially with the predicament. But going to such technological lengths to make sure that Cushing's face was very prominent is a move worthy of a thundering applause.

Tarkin's appearance is by no means shoehorned. He was a key figure in the 1977 saga debut, "A New Hope" as part of Emperor Palpatine's cohorts. While Darth Vader is obviously the muscle of the Empire, the general is the glaring brain behind it. He oversees operations and even manages the Death Star. That is of course before fans found out about the untold story of Director Orson Krennic (Ben Mendelsohn) who was the main pusher for the massive space weapon.

Those who found the time to have their hands on "Rogue One's" complementary novel by James Luceno, titled "Catalyst" know that Tarkin and Krennic did not really get along very well. Both Imperial workers have been striving towards the good graces of the Supreme Chancellor and years after, hints of their rivalry are very prominent in the standalone film. In fact, Tarkin's part in "Rogue One" is very pivotal in fleshing out Krennic's unknown character.

"Rogue One: A Star Wars Story" blasts through North American cinemas today, Dec. 16.