The mystery at Claudia's house /
Ann M. Martin.
- New York : Scholastic, c1992.
- 136 p ; 20 cm.
- Baby-sitters Club mystery ; #6 .
- Martin, Ann M., 1955- Baby-sitters Club mystery ; #6. .
"An Apple paperback.".
Claudia's room has been ransacked, and her sister Janine is acting strange. It's up to the Baby-sitters to solve the mystery.