J J Connington 
Nemesis at Raynham Parva [EPUB ebook] 

‚Mr J. J. Connington is a name revered by all specialists on detective fiction‘ Spectator When Sir Clinton Driffield travels to the village of Raynham Parva to visit his sister, he little imagines that his latest case will involve his own family. His niece has married an Argentinian, and the village is soon filled with exotic incomers, one of whom appears to have been a foreign agent.This unusual case presents Sir Clinton with three interlocking mysteries, which lead to a startling conclusion.