Madarach's Secret - D. J. Mitchell - Bog

In this sequel to Benji's Portal, Benji Haight and his sister Lisa continue their adventures throughout the galaxy with their trusted spacecraft, Madarach. They encounter other travelers and reconnect with old friends. But Lisa contracts a mysterious disease during a visit to a new planet, and Benji must trust Madarach to help save her. And when Benji decides to help his friends bring peace to the war-torn planet of Zeblack, events spiral out of control. But Madarach has a few secrets to reveal. One of these will change his relationship with Benji forever.