When Alderman Dawson is stabbed to death while visiting the Riviera with a group of English tourists, Inspector Littlejohn puts his holiday on hold to assist the French police. But the suspects are plentiful. The culprit could be one of Dawson’s fellow travelers—or perhaps someone who encountered him years ago during World War II. While Littlejohn fends off complaints from the impatient members of the tour group and delves into potential motives, he can only hope that his investigation doesn’t go south along with his much-needed vacation. . . .   “One of the subtlest and wittiest practitioners of the simon-pure British detective story . . . his adroit ironic Inspector Littlejohn is one of the more popular members of the fictional C.I.D.” — “Mr. Bellairs always gives good value.” —