Bücher der Reihe The Portal Adventures

Tania is tired of not having any friends because every time her mother changes her job they have to move. But this time Mom had really gone too far, dragging Tania away with her to a temporary posting as senior security officer on Calista Station.Things start to look up when Tania meets Mark and his friends Windracer and Shr'un. Shr'un's father is a technician for Malachi Mining, the same company where Tania's mom works. But all is not well. Someone is stealing star-stones and smuggling them from the Station. When Shr'un's father disappears, it appears he may have been involved, but then things go from bad to worse - Tania's mom disappears as well! Now it is up to Tania, Mark, Windracer, and Shr'un, with a little help from Shr'un's highly illegal AI, to solve the mystery and rescue the missing parents. An exciting sequel to The Trouble on Teral, Crisis at Calista Station invites readers to join Mark and Windracer in a new adventure with new friends.

Perhaps running away from home had not been one of Mark's brightest ideas. But after his mom canceled his visit to her archaeological dig on Teral Four, he felt he had no choice. Now he wasn't so sure - when his dad, a Colonel in the UN Peacekeepers, found out he was going to go ballistic. If he could just speak to his mom perhaps he could still smooth things over. Unfortunately for Mark, the Llarst, violent aliens who have already fought one war with Earth, have taken his mom and the other archaeologists hostage. And if the Llarst find what they're looking for, all of Earth will be in danger. Now, with just the assistance of Windracer, a young saurian on her first vision quest, and her elephant- sized groundhog, he must rescue his mother and her friends, stop the Llarst, and face his dad. Piece of cake ...

The last thing Tania needs is someone else telling her what to do. Her mother does enough of that already! But during a school trip to the museum, she somehow finds herself gaining a bossy, alien teddy bear called Edward, who decides to adopt her.When Tania, Edward, and her friends Mark and Windracer join Tania's mom on Vertu Station, they are put up in a 5-star hotel on part of the planet's sole remaining arcology; a massive, pyramid-shaped, self-contained city. But after Archaeologists accidentally activate an alien temporal warp generator, Tania, Mark, Windracer, and Edward are thrown backward through time.With Edward's power reserves dangerously low, it is up to the three friends to reach the generator and turn it off-before it destroys the planet.An exciting sequel to Crisis at Calista Station, Vortex on Vertu Prime invites readers to join Tania, Mark, and Windracer in a new adventure with new friends.