Death Set in Diamonds by Gerald Verner
Last in the Trevor Lowe series.
On a golfing holiday, playwright and criminologist Trevor Lowe and his assistant are on their way to see Sir Reginald Allerdyce. They encounter an old friend, Detective-Inspector Shadgold, investigating a criminal known as the diamond bandit and three robberies committed in four weeks – all involving diamonds.
When Lowe discovers that Sir Reginald has been murdered, he suddenly becomes involved in the case. So begins a chain of events that plunges all three of them into deadly danger…
Gerald Verner (1897-1980) was the pseudonym of British writer John Robert Stuart Pringle. Born in London, Verner wrote more than 120 novels that have been translated in over 35 languages, and many of his books have been adapted into films, radio serials and stage plays. Verner also wrote forty-four Sexton Blake tales.