June 1901. Lucy and Jack Kelly are sent by Holmes to the village of Porthcurno as the station chief, Bousbib, of the undersea telegraph company is missing. In a few days the last link to England from South Africa will be completed, important because of the Boar War and the need for speedy communications. Then Holmes, Watson with Becky and Flynn join them. But can they unravel the mystery in time and find the spy, and possible murderer.
An entertaining and well-written historical mystery with its cast of interesting and likeable characters. Another good addition to this enjoyable series. ( )