Robin was born in California and grew up in an Oxford college, across the road from the house where Alice in Wonderland lived. She has been making up stories all her life.
When she was twelve, her father handed her a copy of The Murder of Roger Ackroyd and she realised that she wanted to be either Hercule Poirot or Agatha Christie when she grew up. She spent her teenage years at Cheltenham Ladies' College, reading a lot of murder mysteries and hoping that she'd get the chance to do some detecting herself (she didn't). She went to university, where she studied crime fiction, and then worked at a children's publisher. Robin is now a full-time author who lives in Oxford with her husband and her pet bearded dragon, Watson. She is the author of the bestselling, award-winning Murder Most Unladylike series and the Guggenheim Mystery.