The fiction of mid-century English author Daphne du Maurier has inspired some of cinema’s most sinister highlights, the most admired being Hitchcock’s Rebecca and The Birds. Written and directed by Roger Michell, this new adaptation of her 1951 novel My Cousin Rachel is the first film treatment since Richard Burton and Olivia de Havilland’s romance a year after publication. Michell is maybe best known as the director of rom-com smash Notting Hill, and much of his work since, like frothy breakfast show comedy Morning Glory or Bill Murray’s FDR turn in Hyde Park on Hudson, has stuck to middle of…