For years, Nicola Walker has played detectives, lawyers and women holding complicated lives together. But her latest role in comedy-drama Alice and Steve may be the closest she's come to playing herself. The six-part series, written by Sophie Goodhart and co-starring Jemaine Clement, begins with a friendship-shattering premise. Alice (Walker) discovers her best friend Steve (Clement) is dating her 26-year-old daughter, Izzy. What follows is part comedy and part emotional warfare as two middle-