Stewart delves deeper into the apparent suicide of his best friend Callum, uncovering secrets and lies in Stonemouth's close-knit community. He soon realises his questions are ruffling feathers - even his godfather, local businessman Mike MacAvett, is behaving strangely, warning Stewart to leave well alone. The only person he can turn to is ex-girlfriend Ellie, and despite their troubled past, they work together to expose the sinister forces behind Callum's death. Conclusion of the mystery based on Iain Banks' novel, starring Christian Cooke, Charlotte Spencer, Gary Lewis and Peter Mullan.