(Photo: Getty Images)
Filming on the spy flick Argylle has wrapped, with Henry Cavill set to star. A first look photo of him in character was recently released, courtesy of Empire online.
In the photo, we see Cavill dressed in a green velvet blazer, slow dancing with a woman bedazzled in gold:

If it’s hard to make out the actress from the photo, that’s singer Dua Lipa, making her film debut. While the two are getting friendly on the dance floor, it's not clear what their relationship is, as the storyline for the movie is just as mysterious. 
Argylle is based on Ellie Conway's forthcoming novel, which is scheduled to publish in 2022. The movie adaptation will focus on a globe-trotting spy named Argylle, who is on a whirlwind adventure. It seems logical that Cavill would take on the title role, but that also has yet to be confirmed. 
The synopsis is brief, and leaves a lot of room for the imagination. Director Matthew Vaughn helps fill in the blanks, when talking about his excitement for the project. He said in a statement, "We have assembled an absolutely stellar cast to inhabit each of the wonderfully original and captivating characters in this thrill ride of a story,” reports Deadline. 
In addition to the above casting, you can also look for Ariana DeBose, John Cena, Bryan Cranston, Bryce Dallas Howard, and Sam Rockwell.
This story is so secretive, there's no description — at least, nothing official — for the book online. Argylle is that good at hiding his identity.
This isn’t Cavill’s first time stepping into the spy game, having starred in 2015’s The Man From U.N.C.L.E.: 

Are you now inclined to investigate this storyline?