BBC Drama ‘My Mother and Other Strangers’ Comes to Masterpiece in June New period drama My Mother and Other Strangers is headed to PBS’ Masterpiece this summer. The five-part series premieres on Sunday, June 18 at 8pm, just ahead of the debut of the third season of popular mystery drama Grantchester. The wartime drama By Lacy Baugher for Drama on 5/19/2017