Unforgotten is one of the UK's top mystery dramas and will be back for a fifth series, despite star Nicola Walker not returning after her character's dramatic exit last year.
And now creator Chris Lang has revealed that script read-throughs with her replacement, who will be the new partner to DI Sunny Khan played by Sanjeev Bhaskar, have started this week.
Read more: New TV dramas to look out for from ITV's Our House and Ridley to BBC's Blue Lights
