By Peter A. OppenheimThe acclaimed adventure novel series for young readers
In this fun adventure novel for
young readers, Zack and his older sister, Taylor, were
enjoying the last few days of their summer vacation when they
made a fantastic discovery.A mysterious box buried in the
sand with an unusual telescope inside.
"My grandchildren love this series. It's great fun!" - Nikki L.
"Very well-written, informative, with an absorbing plot and
delightful characters." - David R.
Plus the latest adventure:
In this latest adventure, a comet threatens Earth and the travelers leap
into action as humanity's
last, best hope.