Ne'er-Do-Well is a 1954 detective novel by the English author Dornford Yates (Cecil William Mercer), his only work of the genre. Although Richard Chandos narrates, the book is not generally classified as a 'Chandos' title. This is Dornford Yates’ only ‘straight’ detective novel – it is an uncommon murder story set in a convent, and reveals Yates’ supreme talent for tension, strong characters and a page-turning plot.