See Our First Murder for set-up here -- three elderly spinsters who have, with a brother, laberited a detective agency. Now they are employed to guard an affair involving the cream of society at the opening of a jewel emporium, where the historic jewels are to be ""modelled"" by various glamor girls. The gaiety is shattered by a strange scene, in which two marriages are announced, and others not involved, show their hands. A few minutes later glamor glamor girl number one is found dead. Everyone is suspect; alibis are full of holes; a second murder follows fast; and it takes little old Miss Lutie to prevent a third. Second rate.