ITV viewers were thrilled after they spotted a familiar star in police drama Grace.
Eagle-eyed fans pointed out the surprise connection to cult show Doctor Who on Twitter after recognising actor Arthur Darvill.
ITV viewers spotted a familiar star in murder mystery Grace
Arthur Darvill played Rory in Doctor Who
On Twitter, one fan referred to his Doctor Who character and penned: “Rory wouldn’t kill anyone, I tell you!”
A second typed: “Loving the #DoctorWho connections in tonight’s #Grace episode, with Arthur Darvill guest-starring in it. Hope we see more former DW actors in future episodes.”
And a third said: “Are you trying to make me believe that Rory Williams is capable of murdering his wife?”
While a fourth chimed: “The Master interrogates Rory. The Doctor won’t be happy.”
Set in Brighton, Arthur plays the role of Mr Bishop in series 2 of Grace.
He is trying his best to convince the police that he is innocent and did not kill his former school teacher wife Katya.
The arrogant businessman breaks down at the sight of his dead wife, but appears to be lacking any real emotion.
Roy Grace and his sidekick DS Glenn Branson (Richie Campbell) are working on the premise he is guilty-as-sin after finding a suspicious £4 million life insurance policy.
What happened in Grace series one?
Detective Superintendent Roy Grace investigated a joke gone wrong.
It all started with what seemed like a stag do prank ended up with property developer Michael being buried alive by his friends.
Things took a turn for the worst when the four men who left the groom in the shallow grave, were then killed themselves in a car crash.