The Aldens are spending the summer traveling on a houseboat! Throughout their journey, the children have the feeling that they're being watched. Someone is watching them - and the thing that he wants is somewhere on their boat! He'll stop at nothing to get it and it's up to the Boxcar Children to figure out why!
(Tags : Houseboat Mystery: The Boxcar Children Mysteries, Book 12 Gertrude Chandler Warner Audiobook, Gertrude Chandler Warner Audio CD )
