When Dimanche is orphaned at the tender age of one, Chief Inspector Barry Bullpit advertises for any known relative to come forward. Unluckily for Dimanche, her real aunt does not see the message, but an evil money-grabbing imposter does. Dimanche, heir to an enormous fortune, is sent to live with the dreaded Valburga Vilemile, who tries to rid herself of Dimanche at every opportunity. But her lack of success is partly due to Dimanche's wits and courage, and partly to Polly Pugh, Dimanche's young and pretty nanny, who foils all Valpurga's attempts and helps Dimanche find long-term happiness with her real aunt.

The third and final adventure for this plucky young heroine who has an unfortunate habit of getting kidhapped. Lively new covers and inside illustrations with freshly designed text. With only one day’s notice, Dimanche is required to produce the Diller Deed and title for inspection, or lose everything! But Dimanche isn’t too worried, because she knows the deed is safe in Rockford Bank. Or is it? Unfortunately someone has stolen it and with only hours to go until the midnight deadline, Dimanche fears she will be unable to get it back in time. With the help of her ex-kidnapper, and now best-friend Wolfie T Volfango, Dimanche is guided to a tiny island. There she is tied to a rock by a mysterious tall thin man. Plucky Dimanche manages to escape and she reaches home just in time to present the deed, pursued in a fury by her captor, who turns out to be none other than the husband of the evil Valpurga Vilemile. Dimanche Diller saves the day once again.