Many Happy Returns, Mrs. Entwhistle — Doris Reidy

Mrs. Entwhistle doesn't go looking for trouble, but somehow it finds her. The intrepid almost-octogenarian spends a night locked in a big box store, rescues her best friend from a cult, uncovers a precious gem hidden by her late husband, and celebrates a big birthday full of surprises. Four stories bring back beloved characters and introduce new ones in this fourth book of Entwhistle adventures. Meet a retired police dog who's still got the right stuff, two hapless thieves, a security guard with a dream and many more. As Mrs. E. would say, Oh, for heaven's sake! Just read it.