The Cannes Affair boasts an eccentric cast of characters - ostensibly searching for a missing Michelangelo sketch but in reality hunting for quite other things.The comic plot centres on a derelict French mansion - Rose du Desert - in a forgotten backstreet in Cannes.Ex-pat Caz miraculously inherits a flat inside from estranged Aunt Agnes. She sheds her trophy-wife image along with her marriage and becomes an accidental detective steered by her cunning Labrador.