Sweeping family saga spanning three generations adapted from the novels of Elizabeth Jane Howard. Hugh Bonneville leads the cast. The Cazalet dynasty is centred around three very different brothers , Edward, Hugh and Rupert , and their wives and families, set against a backdrop of WWII.Filled with strident personalities and passionate liaisons, the saga is reveals mid-20th century family relationships, at a time of dramatic change and upheaval. Hugh Bonneville leads the cast.