Daniel Mays
Marcus Thurwell played a key role in series six of the BBC drama – even if we didn't get to actually meet him.
Laura Haddock, Daniel Mays, Angela Griffin and Laurence Fox are just a handful of the show's lead stars.
If you watch one thing this weekend, make it this Ibiza-set murder mystery.
'He incites both sympathy and horror.'
'Bags of potential.'
Daniel Mays' character was killed off in the first episode.