Hanging on the Wire — Gillian Linscott

Nell Bray has dedicated herself to the woman's suffrage movement; it's her amateur sleuthing, though, that seems to be attracting the most attention. First, Nell unearthed the truth behind the mysterious death of one of France's most notorious courtesans, and now comes a plea from her old friend Jenny Chesney.
World War I is at its height, and Jenny is hard at work at Nantgarrew military hospital, where Freudian analysis is a specialty. Her efforts are complicated by Mrs. Monica Minter, who is determined to express her disapproval of Freud's theories through petty acts of sabotage. But would Mrs. Minter resort to a pot-shot at one of the patients? It seems unlikely, but someone did.
Nell holds no truck with either Dr. Freud or Mrs. Minter. Neither does she approve of war, but attempted murder is another matter. So she heads for Nantgarrew - where she finds that mysterious behavior is a way of life. Mrs. Minter swoops down like lightning, bent on her schemes. One soldier keeps a handy box of grenades and revolvers under his bed. Another is determined to reach Moscow by bicycle. And the doctors in charge are far less interested in these odd goings-on than in their patients' dreams - be they of sausages or sex.
Nell's bafflement turns to horror when the would-be assassin's aim finally turns true. Nantgarrew - devoted to healing - becomes the site of a murder, and Nell Bray, indomitable and irrepressible, is determined to solve it.