Into Oblivion: Murders, Missing Persons and Mysteries by Marilyn A. Hudson explores the world of the mid-century and how some people took a wrong turn on a road of lingering questions.
In this book Hudson gives a sweeping overview of some of the dastardly things people were doing to each other in the 1930's- 1960's in average and normal America. Then she gives some deeper looks into the lives of several victims whose cases are still unsolved. Finally, she offers a tantalizing theory that connects previously forgotten crimes with other unsolved murders in hopes authorities will decide to look a little deeper and cast their net a little wider. For, as she notes, "there is no statue of limitations on finding the truth."
Look for it coming soon.