A Coin of Edward VII A Detective Story — Fergus Hume

The Morley family--a husband, his wife and her three children from a former marriage, one young ward, and a governess. Add in Giles Ware, a young man who was engaged by a family agreement to the young ward, and the fact that he's in love with the governess, and you have the start of a mystery. When the young ward is found dead and the governess has disappeared with a mysterious man, Mr. Ware and a detective, Mr. Steel, must search for the governess and unravel the mystery...