Among the mad, by Jacqueline Winspear

In the next in Winspear’s Maisie Dobbs series, Maisie witnesses a public suicide by a war-damaged man and is drawn into a rather modern-sounding terrorist plot involving the ongoing development of poison gas, which was first used in World War I. When a threatening note is sent which mentions her by name, she becomes a special advisor to Scotland Yard as they race to find the author of the note before a massive loss of life occurs. As so many of the author’s mysteries do, the narrative will involve the mental and physical fallout of that war on former soldiers. And as always, the period details add so much to the book. A continuing favorite series. 318 pp.