Joe and Bertha Castin, caretakers of Kenwood Hall, take Evvy Collins from a fairground and start training her up to impersonate Lady Evelyn, who mysteriously disappeared seven years ago at the age of five, so they can claim the Kenwood fortune. But the deception is not going well, and things get even more tangled when Evvy begins to find clues as to her real identity.
- Artist: Tony Thewenetti
- The Riddle of the Lost Heiress – Mandy: circa #42 (4 November 1967) – (?)
- Reprinted – Mandy: #612 (7 October 1978) – #622 (16 December 1978)