Nicola Walker's departure from 'Unforgotten' is rather unexpected, but the real reason may surprise you even more.

Not only that, but the show just happened to be written by another Walker — Nick Walker (of ... as writer and creator, and Nicola returning as the leading lady once more. Read an illuminating ...

Hello Magazine reports that speaking about why she left the show, Nicola Walker said: “Chris Lang and I had been discussing the storyline for Cassie since the first series. By the time we got to ...