Mary Anne and the Silent Witness (the Baby-Sitters Club Mystery #24)

Hoping to overcome the distrust of eight-year-old Luke, the Baby-sitters Club's newest charge, Mary Anne believes that Luke holds the key to a mysterious fire and a mean developer's plans to take over Stoneybrook. Mary Anne and the BSC think that Luke Martinez, one of their newest charges, has a secret which holds the answer to a mysterious fire at his house and information that could help stop a mean developer from taking over Stoneybrook. Can they win his trust before it's too late?