Brian Freemantle: The Holmes Inheritance (2004)
From the Publisher:
Itching to prove himself his famous father's equal, Sebastian Holmes, finds his opportunity in the run-up to World War One. Cabals of US businessmen plan to exploit their country's neutrality by selling arms to both sides. Sebastian infiltrates the circle and discovers a dangerous world.
Brian Freemantle: The Holmes Inheritance. Severn House, ISBN: 0727860569 (February, 2004), 346 p., £18.99.