A Sinful Mistake - Miss Fortune World (A Miss Prim & Proper Mystery), #4

Just when life appears to be settling into a quiet routine, the news that Gertie plans to ride off into the sunset with Bull Dozer sends shock waves through Sinful.  Despite possessing an encyclopedic knowledge of etiquette, Stephanie soon realizes that her life as Miss Prim & Proper hasn't taught her the first thing about wearing a wire, the proper use of handcuffs, or how to pose as an illegal arms dealer.
Between discovering a million-dollar life insurance policy taken out against Gertie's life, uncovering Bull's illegal activities, not to mention moving Ida Belle into a nursing home, Stephanie and Fortune are forced to work together to sort through the mess that threatens the very existence of Swamp Team Three.