It was previously announced that the 8-part series will begin next Monday, with Episode 2 following on Tuesday 8th February. The BBC have now confirmed that Episode 3 and Episode 4 will air on Monday 14th February and Tuesday 15th February respectively.

Set on a recently-discovered life-sustaining planet, the cast also includes Daniel Mays (Ashes to Ashes), Jamie Bamber (Battlestar Gallactica), Eric Mabius (Resident Evil), Ashley Walters (Small Island), Amy Manson (Desperate Romantics) and Michael Legge (Shameless).