Modesty and Willie are being held by ruthless villain Gabriel on a remote Mediterranean island. He has used them to help him steal a huge consignment of diamonds but now has no further use for them. Prospects look bad for the pair and they must call upon all their resources to save the day.
Modesty Blaise, by Peter O'Donnell, was adapted from the novel of the same name by Stef Penney.
With an original score by Goldfrapp's Will Gregory, arranged by Ian Gardiner, and performed by the BBC National Orchestra of Wales, conducted by Ben Foster.
A BBC/Cymru Wales production, produced and directed by Kate McAll.