'Simply Perfect' takes as its heroine Miss Claudia Martin herself, an on-the-shelf spinster whose life is bound up in her school and whose antipathy towards members of the aristocracy is well known.

At the start of this story Claudia finds herself showing Joseph Fawcitt, the Marquess of Attingsborough around the school before travelling with him to London in order to drop off two pupils at their new positions and to visit her man of business.

Claudia soon finds that there's more to the Marquess than she first assumed, and behind his handsome and charming exterior she finds he has a secret, an unexpected female in his life, one he has to keep away from society.