Idris Elba (28 Weeks Later, Ghost Rider: Spirit of Vengeance), Sean Harris (Isolation, Creep) and Kate Dickie (Outcast) have joined Noomi Rapace, Charlize Theron and Michael Fassbender in Ridley Scott’s Prometheus, reports the Daily Mail Online. While Scott tells the site that he’s attempting to keep the film’s plot top secret, more information continues to leak out about the quasi-Alien prequel arriving in theaters June 8, 2012.

Speaking of Alien, Bleeding Cool talked to unnamed sources close to production who tease the connection to Scott’s 1979 film.

“[Prometheus] has the Alien aliens in it. The catch, though, is that you might not recognize them – at least, not at first. Remember how the alien took on canine qualities after gestating in a dog? You may even suppose that the first film’s alien was so recognizably humanoid because it had grown in a human. The same applies here: generation by generation, the creature mutates.

“As Prometheus begins, the xenomorph is not too recognizable. Sure, it has that alien DNA that Scott and Fassbender teasingly referred to, but it’s missing … well, it’s missing human DNA. Or dog DNA. All you have to do is imagine how it might look if it were to mix DNA with another alien species … and I think we’re starting to work it all out.”

It has also been rumored that we’ll also see the alien space jockeys from Scott’s breakthrough horror film.