The Crystal Cavern by Hannah Alexander is one of my MOST favorite books! This is a wonderful suspense story with a lot of mystery and romance mixed into the plot. The plot is well developed and it was quite hard for a seasoned, couch detective, such as myself, to figure out the mystery. The story takes place in Missouri on a cold, winter's day. As you begin reading the book, you will of course, think you know what is going on and what will happen BUT there are more twists and turns in this story than a cowboy riding a not-yet-broken-in bronco. Don't start this book expecting to put it down....you'll be hooked from page one!