Masterpiece Studio

*Warning: This episode contains spoilers for Episode Five of Season Four of *Grantchester. Detective Geordie Keating’s put-upon wife, Cathy, has faced marital betrayal, a growing family and a murder-obsessed husband with quiet grace, but this season in Grantchester, Cathy has her own career to worry about. Actor Kacey Ainsworth talks about working with Robson Green, the pleasures of a lived-in fictional marriage and how Cathy will deal with her ongoing workplace harassment in the upcoming season four finale.