Anthony Gilbert 
Old Lady Dies [EPUB ebook] 

A rich, controlling old woman is murdered — the only problem is there are too many suspects…Classic crime from one of the greats of the Detection Club Mrs Wolfe was dying — at last. Nobody seemed very sorry about it. Certainly not her relatives or legatees. Mrs Wolfe was wealthy and domineering and her periodical relapses regularly brought her heirs rushing to her bedside.The old lady derived a grim satisfaction from controlling people, but there’s one last thing she is unable to control. For when Mrs Wolfe does die it is not by natural causes, but by treachery . . .