The Fenton Case

"Joan and Janet are happy to welcome a young couple for a weekend stay, although Janet has mixed emotions about their other visitor, Margaret Burns, an older woman sent to Doveby House by the mysterious Edward Bennett.
A series of break-ins around the village of Doveby Dale worries all of the small business owners in the area, including the sisters and their friend William Chalmers. When the burglar strikes at one of the homes right across the street from Doveby House, Janet and Joan are even more concerned."