The Alden children are off on a fun vacation with Aunt Jane to her friend's motel in Florida. Centered right in the Florida Everglades, this hotel was once quaint but is now falling to pieces. The Boxcar children are determined to help her fix up the motel, but strange things begin to happen around the hotel. . . things that could force the hotel to close down and stay closed. Can the kids figure out who is behind all of these terrible acts? #23 in the series.