It is 25 years after Lord Lucan's mysterious disappearance in the wake of the vicious murder of his children's nanny. The celebrated psychiatrist Dr Hildegard Wolf is approached in her Paris consulting rooms by not one, but two men, both claiming tobe Lucan. Dr Wolf is intrigued. Which, if either, of the men is the real 'Lucky' Lucan? And can she discover the truth before her own dark secret is revealed?