A portrait of former Miss Spain and Miss World, Lady Margarita is commissioned by her husband, Lord Charles Elliot, in honor of her upcoming birthday. But, before her birthday, Margarita is brutally murdered.

Police Commissioner Rivera has a clear-cut suspect: The artist of the portrait. Did she really do it?

The Commissioner soon discovers flaws in the evidence. He sets out on a trail of clues leading through three countries to solve the case and find the true murderer.