Dixon, Franklin W. author New York Grosset & Dunlap 1987 eng 180 p. ill. Not only is the local bank robbed, but two of the Hardy boys' pals mysteriously disappear after a masquerade party. Are the events related? How the Hardy boys use all their courage and skill to outwit the criminals provides an exciting climax to one of the most baffling mysteries the young detectives have ever encountered. [Fic] 9780448089041 000031/0000314a.jpg 000031/0000314a.jpg BR-BrIDEA 118590