A star of stage and screen for more than 50 years, Patricia Routledge has a huge U.S. fan based delighted with the earthy gusto she brings to the role of Hetty Wainthropp, the housewife tuned gumshoe. Both steely and motherly, Hetty Wainthropp takes no prisoners and puts on no airs, using her dowdy appearance to blend into the surrounding as she cracks cases in housing projects and drawing rooms. Popular young actor Dominic Monaghan plays Geoffrey, the once wayward teen who becomes her trusty sidekick. Hetty gives him a purpose and a home; he lends her his youthful agility and energy. Completing the investigative team and the family is Hetty's devoted husband, Robert.