Hidden Depths, Telling Tales and The Crow Trap from the first series, and Silent Voices from the second series, are based on the novels of the same names by Ann Cleeves. The episode Sandancers from the second series was due to be broadcast on Sunday, 13 May 2012. However, the episode was pulled from the schedule as its storyline was about a soldier’s death in Afghanistan and it coincided with news of two servicemen dying there.