The secret of the skeleton key
By: Penny Warner
Series: The Code Busters Club -- Case #1
Publisher: Egmont USA
Published: 2011
Place of publication: New York
Language: eng
ISBN-13: 9781606841624; 9781606842812
Subjects: Fiction; Ciphers; Cryptography; Mystery and dectective stories
Description: Using their code-breaking skills, four middle-schoolers solve the mystery of the eccentric man who draws stick figures on his second-floor bedroom window.