The Cautley Conundrum

A Chief Inspector Pointer Mystery!
The four Cautley cousins, Major Howard Cautley, Lionel, Jack, and Fabian could not have been more different, a wealthy businessman, explorer, architect, and mystic respectively. But the cousins, while they might argue amongst themselves, could always be counted on to stick together. This certainly appeared to be the case when the Major is killed in a seeming accident by his own shotgun. The local police, very familiar with the family, are reluctant to suspect the surviving cousins of murder. Chief Inspector Pointer, though, when consulted over a pearl necklace that has gone missing on the same day, is less reticent. As a matter of long practice, he suspects everyone. But can even Pointer unravel the Conundrum that is the Cautley cousins?