We love watching reruns of Agatha Christie's Poirot. The TV drama ran from 1989 to 2013, and adapted every single one of the beloved crime author's major works of fiction - and they had some royal help to do it!
MORE: David Suchet nearly quit Agatha Christie's Poirot - find out why
Royal family member Lady Frederick Windsor, who is also known as Sophie Winkleman, starred in season nine episode one, Five Little Pigs, back in 2003 - but do you remember seeing her?
WATCH: Poirot star David Suchet opens up about remembering his lines
In the episode, Sophie plays Angela Warren, one of the 'five little pigs' who was present at the house during the murder of artist Amyas. While his wife was found guilty of the crime, her daughter Carla begs Poirot to take the case as she is determined of her mother's innocence.
MORE: Downton Abbey star Maggie Smith looks incredible at start of career - see the gorgeous snaps
MORE: Sanditon star celebrates change to show ahead of seasons two and three
It turns out that Angela was indeed innocent of the crime, but believed that it was her younger sister Angela who committed it, and so doesn't defend herself in court. So who really did it? You'll have to watch the episode to find out!
Sophie plays Angela in the 2003 episode
Sophie starred alongside Game of Thrones star Aidan Gillen and Bridget Jones's Diary actress, Gemma Jones in the episode, who played Amyas and Miss Williams respectively.
She starred in the episode titled Three Little Pigs
MORE: Thousands raised for HELLO! and Lady Frederick Windsor's home school appeal
Sophie tied the knot to her royal husband Lord Frederick Windsor back in 2009, and the pair share two children, Maud and Isabella. Speaking to Tatler about being unable to work over much of 2020 due to the lockdown, she said: "It's been alright, but I've been frustrated and tired and stressed out like everyone else.
"Children need to socialise and they get extremely bored if they don't, and I've not been covering myself in glory with this online learning thing... The teachers have been really brilliant, but I've been loath to stick my six-year-old in front of a screen all day long."
Like this story? Sign up to our newsletter to get other stories like this delivered straight to your inbox.