In July 1914 a family gathers at a holiday hotel in Devon. There is a dominant father and a socially ambitious mother who adores her son Dennis. When he arrives it is at once clear to the reader why he does not fit in with his smugly conventional family.

Then, with the outbreak of war, the tone of the book changes: it focuses on Dennis’s refusal to fight, indeed on his abhorrence of violence; his falling in love with Alan; and his close friendship with Antoinette, who has not realised she is lesbian but is unabashed when she does. Dennis, however, is in agony about being ‘a musical man’ (slang for being gay): ‘Abnormal – perverted – against nature – he could hear the epithets that would be hurled against him. But what had nature been about, in giving him the soul of a woman in the body of a man?’

Running through all this is the background of the war. At first everyone thought it would be over by Christmas. Then there were the horrors of 1915. And then conscription started. Month by month one sees what happens to Dennis and the other COs (conscientious objectors) he knows.