The new series will see the team face their “most enigmatic adversary” yet in the form of Detective Chief Inspector Joanne Davidson – played by Kelly Macdonald – whose suspicious conduct on an unsolved murder case attracts their attention.
The sixth season has been eagerly anticipated as it had originally been due to air in 2020, but shooting was halted for six months last March due to the pandemic.
Speaking about the show’s huge success since its humble beginnings on BBC Two in 2012, Adrian also told The Graham Norton Show: “It was a slow burn. The first series was great, but we didn’t know we would get a second one. Then we got a second one and halfway through that suddenly the numbers built and since then it’s just taken off – it’s big and the anticipation is massive. It’s intense.”