معمای قلعه: مجموعهٔ بچه‌های باکسکار، جلد ۳۶

A Stradivarius violin is stolen while the Alden children are visiting a castle, now they must find out who has taken it. The Boxcar Children are visiting a castle! But as they help to restore it, they see mysterious lights, hear strange music, and see spooky faces in the windows. Who is haunting the castle? The Alden children have another mystery to solve when they visit a castle and must figure out which of the guests has stolen the Stradivarius violin.