Jan and Jenny are off on yet another adventure in this eighth book of the Jan and Jenny Series. This mystery/adventure seems to be the most original of all their adventures to date, because our two sleuths make a brand new scientific discovery! They are very excited about the find because, like the two of them, this discovery is one of a kind! Find out what it means to be best friends and to stick together no matter what. What is a lucky penny and how does a lucky penny fit into this story? And since there is no villain in this book, why are the girls in danger again? Written by award winning author, attorney and former teacher, Penelope Dyan and twenty year veteran court reporter, Pamela Hillan, it is no wonder the subjects of this book are so relevant and accurate as yet another Jan and Jenny mystery/adventure takes its exiting twists and turns. Jan and Jenny are out to enlighten the world, and so far they are doing a pretty good job of it!