AdThe BBC One soap is to introduce the half-brother and niece of Denise Fox (Diane Parish), amid her ongoing battle with acute myeloid leukaemia, an aggressive form of blood cancer. "We're delighted to welcome Christopher and Krysstina to the cast as we bring two new faces to Walford.” Add EastEnders to your watchlist on the Radio Times: What to Watch app – download now for daily TV recommendations, features and more. AdCheck out more of our Soaps coverage or visit our TV Guide and Streaming Guide to find out what's on. For more TV recommendations and reviews, listen to The Radio Times Podcast.