Tinker is thrilled when Madeline Gilbert, a retired film star, sends for the Lovejoy team, as he has an old crush on her. Madeline wants to sell some of her antiques and gives Lovejoy the job of arranging an auction, but before the big day can arrive there is a robbery at the house - one bearing a striking resemblance to a number of other country house raids in England and France. An international gang seems to be at work.
