Portal

The sequel to Boundary and Threshold!Madeline Fathom had miraculously landed the crippled Nebula Storm onEuropa. She joined on that frozen moon of Jupiter the stranded crewmembers ofthe ill-fated EU vessel Odin. The Nebula Storm's reactor wasruined in the landing, the Odin’s shuttle can’t make the tripback home, and the only vessel that could have made the journey to save them hasjust been destroyed by a renegade crewman, bad luck, and the remorseless forcesof nature. But Madeline, Helen Sutter, A.J. Baker, and the team have one cardleft to play. All they have to do... is survive lethal radiation, vacuum, andice as hard as steel while they figure out how to make Nebula Storm flyagain. But even as they prepare to make the journey home, Europa has one morediscovery waiting for them... a discovery that might be the deadliest trap inthe Solar System!