WARNING: This episode contains spoilers for Episode Four of Grantchester Season 11.

In real life, actor Tessa Peake-Jones couldn’t be further from the dour and opinionated vicarage housekeeper Sylvia Chapman. Tessa is jolly, gentle, and loves to smile—but these differences are exactly why playing Mrs. C is such a joy for her. In this conversation, we talk with Tessa about the early days of Grantchester, what drives Mrs. C, and how her character has opened up through experience over the past 11 seasons.