Series Two will be based on A Darker Domain, the second in the internationally bestselling Karen Pirie novels and once again star Lauren Lyle (Outlander, Vigil) as the young and fearless Scottish investigator with a quick mouth and tenacious desire for the truth. 　　 　　In this second season, Karen reopens the investigation into the unsolved kidnap of a wealthy young heiress and her baby son back in 1985. Karen Pirie launched with 6.6m viewers and averaged 5.9m across the series making it one of the most watched new dramas on ITV last year. The series was also in the top 10 dramas on ITVX.