At an astronomy conference, the Boxcar Children meet Mark who has made an important discovery. Then someone steals Mark's papers.
The Boxcar children investigate the disappearance of a student's research paper from an observatory and the subsequent disappearance of another student.
Description:
At an astronomy conference, the Boxcar Children meet Mark who has made an important discovery. Then someone steals Mark's papers.
The Boxcar children investigate the disappearance of a student's research paper from an observatory and the subsequent disappearance of another student.