Green Mountain Ghosts, Ghouls & Unsolved Mysteries

A Very Private Woman: The Life and Unsolved Murder of Presidential Mistress Mary Meyer

Longitude: The True Story of a Lone Genius Who Solved the Greatest Scientific Problem of His Time

Case of the Unsolved Case (Wishbone Mysteries , No 13)

The Encyclopedia of Unsolved Mysteries

The Five Biggest Unsolved Problems in Science

Amelia Earhart: The Mystery Solved

Resolved : A Novel

Solved ; And, Unsolved: Classic True Murder Cases

The Bermuda Triangle Mystery - Solved