From Deadline:
Ridley Scott and 20th Century Fox have tapped Logan Marshall-Green to play a lead role in Prometheus, the science fiction film that Scott next directs. Marshall-Green will play the role of Holloway, a crewman on the space ship and the love interest for the character played by Noomi Rapace. Rapace, the Girl with the Dragon Tattoo star, was the first castmember set by Scott. Marshall-Green most recently was seen in Devil and Brooklyn’s Finest, and did stints on The O.C. and 24. He’s repped by 3 Arts and Gersh. This was a role that a lot of young actors chased, and who wouldn’t want to be involved in Scott’s first sci-fi foray since Alien and Blade Runner?

The film also stars Michael Fassbender and Charlize Theron, with Idris Elba, Sean Harris and Kate Dickie playing smaller roles. Shooting begins in March on a film that started as a prequel to Scott’s seminal science fiction film Alien but morphed into something else. The original script was by Jonathan Spaihts, but the most recent draft is by Damon Lindelof. Shooting begins shortly in the UK.