Anthony Gilbert 
Snake in the Grass [EPUB ebook] 

He tried to help a woman in need – but she’s the prime suspect in her husband’s murder… Classic crime from one of the greats of the Detection Club Con Gardiner had no family; his work and his one-room flat filled most of his solitary existence, until one evening a strange girl in the street asked him to lend her a pound. Con was attracted to Caro Graves, and puzzled too; he couldn’t see what would become of this girl who had just left her husband after a bitter quarrel, and who had nowhere to go. But he was soon to have more to worry about: Caro’s husband was dead . . . and Caro was the main suspect. 'Anthony Gilbert’s novels show the unsensational type of detective story at its best’ Daily Telegraph