It turns out that director Rian Johnson would invite his cast to play a murder mystery on top of their hotel while killing time during their days off.

'Glass Onion: A Knives Out Mystery' is easily one of the most highly-anticipated movies of the year (which is getting rave reviews from the Toronto International Film Festival FYI), and it seems that the all-star cast of the film were every bit into the premise of the film.

Yep, Daniel Craig, Edward Norton, Janelle Monáe and Kate Hudson (and her partner Danny Fujikawa) and the rest of the cast would all get together in their downtime and attempt to crack a murder mystery game - invited to the event by the film's director.

According to Monáe, Rian Johnson "would leave handwritten, medieval-style notes under our hotel room door saying, 'You’re invited…'', adding that she was game for the entertainment because she regularly hosts "murder mystery parties at my house" and loves to "dress up for fun".

"Everybody played this game," said Daniel Craig, who is back as Detective Benoit Blanc once again, solving a new case with the likes of Kathryn Hahn, Leslie Odom Jr., Jessica Henwick, Madelyn Cline and Dave Bautista being some of the chief suspects. In terms of his style of play while getting involved in the murder mystery with his co-stars, Craig deadpanned: "I’m a very good actor. I was just there for the fun of the game. My game plan was basically just to look like the bad guy all of the time."

Filming on location during a time of incredibly high safety protocols, it seems that things might have gotten heated while accusing the other players - namely Kate Hudson and her partner. Edward Norton told Deadline: "Kate and her husband would accuse each other and it was like 'Who’s Afraid of Virginia Woolf'. I was like, 'Maybe we shouldn’t have spouses in this game…'"

'Glass Onion: A Knives Out Mystery' was screened over the weekend at this year's Toronto International Film Festival, and some early reviews of the mystery/comedy tout it as even better than the first 'Knives Out'. It currently has an 89% approval rating from critics on Rotten Tomatoes with the strong cast line-up being one of the best factors about the release.

'Glass Onion: A Knives Out Mystery' hits Netflix on December 23, but will have a short run in cinemas before this.