It's been two and a half years since Unforgotten last aired on ITV.
The popular crime drama starring Nicola Walker and Sanjeev Bhaskar is returning for series 4 after halting filming in March 2020 due to the coronavirus pandemic.
Series 4 will follow one main case and will see Nicola and Sanjeev reprise their roles as DCI Cassie Stuart and DI Sunny Khan in the critically acclaimed drama.
But when does it start and how many episodes are there in series 4?
Unforgotten kicks off on Monday, February 22 at 9pm on ITV.
Series 4 is made up of six one-hour long episodes which will air at the same time each week.
However, viewers will also be able to catch up on the ITV Hub after the show has broadcast.
Written by acclaimed screenwriter Chris Lang (Innocent, Dark Heart), the new six-part series charts a fresh investigation into another emotionally-charged cold case murder.
The fourth series opens with the discovery of a dismembered body in a scrap metal yard, which the team believe has been stored in a domestic freezer for 30 years.
Watch Unforgotten on Monday, February 22 at 9pm on ITV.
