If she isn't already, Charlotte Ritchie is soon to be a household name thanks to her starring role in the fourth season of psychological thriller You, which lands on Netflix on Thursday.

The actress plays the new woman in Joe Goldberg's life, art gallery director Kate, who is immediately distrustful of the charming psychopath. While fans will recognise Charlotte for her roles in Call the Midwife and Feel Good, did you know that she made her first feature film debut in Harry Potter? Watch her scene below...