Unforgotten begins production on series four, reveals plotlines

Nicola Walker and Sanjeev Bhaskar reprise their roles as DCI Cassie Stuart and DI Sunny Khan as production begins on the highly-anticipated fourth series of Unforgotten. The new six-part series charts a fresh investigation into another emotionally-charged cold case murder. Walker and Bhaskar are joined by Sheila Hancock, Susan Lynch, Phaldut Sharma, Liz White, Andy…