Case known as His Master's Voice occurs in Southern Germany.

Case known as The Death Ray occurs in New York City, United States.

Case known as The Riddle of the Sphinx occurs in Yucatan, Mexico.

Case known as Howl of the Werewolf occurs in Shreveport, Louisiana, United States.

Case known as Desert Shadows occurs in Roswell, New Mexico, United States.

Case known as Melody of Vengeance occurs in New York City, New York, United States.

Case known as The Green Death occurs along the Amazon River, Brazil.

Case known as The Killer Gorilla occurs in New York City, New York, United States.

Case known as The Satan Plague occurs in New York City, New York, United States.

Case known as The Arctic Terror occurs in international waters above the Arctic Circle.