This British sitcom, available to stream starting today, follows a pair of half sisters who learn of one another’s existence after their father keels over and dies at his surprise birthday party. Both named Catherine Wolcott and born just five days apart, the women grew up 13 miles apart as their father maintained a double life for decades. Cathy (Ellie White), daughter of the Wife, is a tightly wound re-insurance agent engaged to a doctor, while Cat (Lauren Socha), daughter of the Mistress, is a free-spirited food truck worker.
While they couldn’t be more different, the sisters form an unexpected bond amid their shared grief. Like the similarly named “The Other Two” — which you should most definitely catch up on — “The Other One” is an acerbic but heartfelt comedy about mismatched siblings and embarrassing parents. The cast is full of Actors You’ve Seen in Other British Shows, including Socha (the surly babysitter from “Catastrophe”) and the always excellent Siobhan Finneran (O’Brien from “Downton Abbey”) hamming it up as Cat’s lusty mother. — Meredith Blake