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The young investigators' quest is complicated by a bank robbery during which some of their father's important records are stolen. Using Mr. Hardy's recently purchased scientific device, a sound spectrograph, the boys identify the voiceprints of the leader of the masked robbers. A chase ensues that takes Frank, Joe, and their pal Chet Morton to the grape-growing region of California and involves them in a dangerous game of hide-and-seek.
A startling discovery at a movie location leads to the solution of this thrilling, fast-paced mystery. Recommended for ages 8 to 14.
Number of Pages: 178
Vendor: Grosset & Dunlap
Publication Date: 1942
Dimensions: 7.72 X 5.06 X 0.72 (inches)
Availability: Usually ships in 24-48 hours.
Series: Hardy Boys
The Hardy Boys' Mysteries #20: Mystery of the Flying ExpressFranklin W. Dixon, George WilsonGrosset & Dunlap / 1941 / Hardcover$6.29 Retail:
$7.99Save 21% ($1.70)Availability: In StockCBD Stock No: WW89203
The Hardy Boys' Mysteries #22: The Flickering Torch MysteryFranklin W. DixonGrosset & Dunlap / 1943 / Hardcover$6.29 Retail:
$7.99Save 21% ($1.70)Availability: In StockCBD Stock No: WW08922X
The Hardy Boys' Mysteries #24: The Short-Wave MysteryFranklin W. DixonGrosset & Dunlap / 1945 / Hardcover$6.29 Retail:
$7.99Save 21% ($1.70)Availability: In StockCBD Stock No: WW89246