The Dig is a 2018 Irish drama film directed by Andy Tohill and Ryan Tohill, from a screenplay by Stuart Drennan. The film was screened at the Toronto International Film Festival and was produced by Brian J. Falconer for Northern Irish firm Out of Orbit.
A father, Sean McKenna (Cranitch), becomes obsessed with finding the body of his murdered daughter, Niamh. The murderer, Ronan Callahan (Dunford), is released from jail after serving a 15-year sentence. At first, he wants Sean off his land, but then decides to help dig for Niamh's missing body in the bog. He pours the old alcohol in his house down the drain, but eventually drinks shots in a pub, hoping to remember the act of murder and where he buried the girl. He develops a relationship with the victim's sister, Roberta (Taaffe). Ronan has flashbacks that revealed his father had abused his mother, who died when he was 14. Ronan and Sean vow not to stop digging. Ronan eventually remembers a detail that proves he is not the murderer.