Hi,
I'm trying to remember the name of a children's book published in the 70's. The story centered around a boy who discovers that some of the kids in his school are actually part of a secret criminal organisation run by a girl codenamed Mistress K, they are using the school as a base for their operations and have even strengthened the school roof to allow them to land a helicopter. The boy has to overcome the gang and save his school. I recall it was written by a teenager who was the son a british Jazz musician but for the life of me can't think of his name either. Any help is greatly appreciated. Thanks.
MB
I'm trying to remember the name of a children's book published in the 70's. The story centered around a boy who discovers that some of the kids in his school are actually part of a secret criminal organisation run by a girl codenamed Mistress K, they are using the school as a base for their operations and have even strengthened the school roof to allow them to land a helicopter. The boy has to overcome the gang and save his school. I recall it was written by a teenager who was the son a british Jazz musician but for the life of me can't think of his name either. Any help is greatly appreciated. Thanks.
MB
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