Chris Lang Made Himself Cry By The End Of 'Unforgotten' Season Four

Warning: This episode contains spoilers for Episode Six of the Fourth Season of Unforgotten.

The truly tragic ending of the fourth season of Unforgotten made series creator and head writer Chris Lang tear up as he wrote it. Lang talks through the twisty fourth season of his series, and looks ahead to what's in store for the planned fifth season of his modern day crime drama.