Kate Winslet thinks she'd be a "lousy" detective The 45-year-old actress has won rave reviews for her performance as cop Mare Sheehan in 'Mare of Easttown' but apart from the socialising elements of the job, she doesn't think she's got the right "stamina" to have pursued a real-life police career 6 July 2021 I'd be very good at the coffee and the after-beers, definitely. "I could never do the job Mare does. I could never be a detective. "I don't think I have the mental stamina. I have stamina - but in a different way." Kate admitted taking on the role was a "scary" prospect because she and the character are so different.