Diane Morgan and her horse, Flyover, were big show-jumping winners until Diane was almost blinded in a car crash. Determined not to give up riding, Diane decided to train Flyover as a show hack. Diane met Leon Franklyn, the young inventor of a blind-aid device which he called the Echo-eye. Diane found the Echo- eye a great help, and she and Leon hoped that by demonstrating it at horse shows, they would inspire some firm to manufacture it. So far they had only attracted the attention of a swindler who wanted to copy the invention.
- Artist: Dudley Wynne
- Diane in the Dark – Mandy: #173 (9 May 1970) – #181 (4 July 1970)