Exclusive – Inside No 9 images released as Sir Derek Jacobi returns to BBC anthology

'How Do You Plead?' will see Sir Derek Jacobi take on his second role in Reece Shearsmith and Steve Pemberton's world of twisted tales, playing a famous but sickly barrister named Webster.

Shearsmith co-stars as his longtime carer Urban, who has developed an unrivalled ability to cope with the man's various ailments and extreme vanity.

But on one fateful night, a surprise comes that will "test Webster's resolve to the very end", but the exact nature of the reveal is being kept top secret in true Inside No. 9 style.

Jacobi previously joined the Inside No. 9 cast for series three episode The Devil of Christmas, where he provided the voice of Dennis Fulcher but never actually appeared on-screen – which allowed this return to be possible.

"That's the rule, if you do a voiceover you can come back," explained Shearsmith at a BFI event marking the launch of Inside No 9 series six.

RadioTimes.com has an exclusive image from Monday night's episode, which sees Jacobi holding a pink balloon, but he doesn't exactly look like he's celebrating anything.

In addition to that sneak peek at the episode, RadioTimes.com also has this behind-the-scenes shot of Inside No. 9 co-creator Shearsmith on the set of 'How Do You Plead?'.

The episode will be directed by Guillem Morales, who also helmed the first three episodes of series six and several other classics such as Sheridan Smith's 12 Days of Christine.

Jacobi and Shearsmith star in the penultimate episode of Inside No. 9 series six, which comes to an end later this month, but fans need not worry as a seventh batch of episodes has already been ordered.

Inside No. 9: 'How Do You Plead?' airs on BBC Two and BBC iPlayer on Monday 7th June at 9.30pm. Looking for something else to watch? Check out our TV Guide to see what's on tonight.