The case of the rugged rogue? Benedict Cumberbatch sports some heavy stubble as Sherlock Holmes in a stark contrast to the character's usual clean shaven look
He's busy filming the much-anticipated fourth series of the BBC's hit-series, Sherlock.
But Benedict Cumberbatch's roguish detective appeared to have lost his razor during his latest escapade, as the cast and crew of the detective drama filmed scenes in South Wales.
Shooting scenes in Cardiff City Centre, the 39-year-old actor sported a heavy layer of stubble as he filmed scenes alongside two elder gents - presumably integral to the plot of the episode.
Whilst the actor's dark brown locks were styled into Sherlock's trademark tousled sweep, the famous detective's usually clean shaven features were coated in a heavy layer of stubble.
Clad in full-costume, and sporting the character's well worn great coat, a navy shirt, dark trousers and black Oxford shoes, Holmes was instantly recognizable amide the hub-bub of cast and crew.
However, it seems that the latest shoot for the series sees Sherlock at his wit's end, as the appeared slightly weary and exhausted - something further emphasized by his loose stance and open-neck shirt.
Chatting away to the crew in-between takes, the actor looked to be searching for the right inspiration to take into the scene.
Clutching a bundle of pink papers in one hand, presumably his lines, it appeared that Benedict was intent on delivering a stellar performance on camera.
And it seems that the actor was facing off against one of Sherlock's numerous enemies, as he appeared to have a tense showdown with a man in a white suit.
Looking slightly insidious, the suited individual stood out from the crowd thanks to the lime green shirt and cravat that he teamed with the cream two piece.
The blonde actor was seen facing off against Benedict in Mount Stuart Square, with the two actors mirroring each other's stances perfectly.
And it seems that it was all hands on deck, as the actors were joined by numerous members of the cast and extras, as well as a heavy contingent of crew.
Filming has continued at full-pace following Sherlock co-creators Steven Moffat and Gatiss confirmation that the show was returning in April - following the New Year's special earlier in the year.
In a statement, Steven and Mark said: 'Sherlock series four - here we go again!
'Whatever else we do, wherever we all go, all roads lead back to Baker Street - and it always feels like coming home.
'Ghosts of the past are rising in the lives of Sherlock Holmes and John Watson bringing adventure, romance and terror in their wake.
'This is the story we've been telling from the beginning. A story about to reach its climax.'
Benedict said he was 'thrilled' to be back as the detective.
He said: 'I can't wait for everyone to see season four. But you will have to wait... though not for long... And it will be worth it.'
Series four will return to BBC later this year with three feature length episodes.