Title: The Secret Seven and the Tree House Adventure
First published: 1972
Description: When a mistreated boy takes refuge in their tree house, the Secret Seven are determined to find out who he is hiding from.

Also printed as: *Well Done, Secret Seven*
Subjects: Mystery and detective stories, Detective and mystery stories, Secret Seven (Fictitious characters), Juvenile fiction, Thieves, Adventure and adventurers, fiction, Gangs, fiction, Children's fiction
LC classification: PZ7.B629 Sft