Originally published: New York : Grosset and Dunlap, 1931 ; Newcastle upon Tyne : H. Hill, 1955.
OBNB doesn't sell books, but you may be able to find a copy at one of these websites:
What happened at midnight by Franklin W. Dixon. ISBN 0006910491. Published by Armada Books in 1975. Publication and catalogue information, links to buy online and reader comments.
