Never Walk Alone - Rufus King

Without realizing it, Carrie Giles has become a stranger in her own home. Four roomers have moved in. Three are cold-eyed men. The fourth is a predatory female whose every word and gesture is a wanton invitation. All four are interested in Carrie's etchings. But she doesn't know why—until a silent killer walks into her room!
A classic novel of suspense by the author of the Lt. Valcour mystery series. (Also published as The Case of the Dowager's Etchings.)