Breaking Bad star Laura Fraser and Downton Abbey actress Siobhan Finneran will be joined by comedian John Sessions for a new six-part murder mystery set on the shores of Loch Ness.
The ITV Studios drama series Loch Ness will focus on the search for a serial killer after the body of a local man is found at the foot of a mountain, while a human heart is discovered on the loch shore.
The case becomes a matter of life and death for Detective Annie Cathro, played by Laura, who is trying to crack her first murder case.
The show, written by Stephen Brady, will also star soap actors Don Gilet and Gray O'Brien and Waterloo Road actor William Ash, and will introduce the detective and her family as the pressure of the investigation undermines their stability and threatens to destroy their lives, as well as several local characters who come under suspicion in the close community.
The show will also introduce forensic profiler Blake Albrighton, who will assist on the case offering insights borne from the last four cases he has helped to crack in his own distinctive style.
Tim Haines, the show's executive producer, said: "Serial killers are monsters that lie beneath the surface of normal happy communities. Where better to hunt for one than in a place that has thrived off its own monster myth for centuries - Loch Ness?"
Loch Ness, which is supported by Creative Scotland's Production Growth Fund, began filming in the Highlands of Scotland in June.