Reported last month, Idris Elba has joined the impressive cast (Charlize Theron, Michael Fassbender, Noomi Rapace) of Ridley Scott’s secretive upcoming sci-fi thriller film, Prometheus.

The film’s plot has been kept heavily under-wraps, with hints that it may or may not be a prequel to Scott’s legendary 1979 sci-fi blockbuster Alien. In the video clip below, Idris Elba evades the question as best as he can

Prometheus is scheduled to start filming this spring/summer.