What is a paleontologist doing on Mars? Pushing her boundaries. . . . Problematica , n: a term used in paleontology to refer to fossils that appear to be either of unknown taxonomic origin, or whose occurrence in the location they are found contradicts current beliefs of the field. The find was made by a teenager. A “funny fossil” no one had seen before out in the middle of the Arizona desert. And right in the middle of controversy: the strangely shaped fossil could help explain one of the greatest mysteries of Earth’s past, the great die-off at the KT boundary. It warranted a big dig, one that could lead to the mother lode, andprofessional immortality. But what Dr. Helen Sutter didn’t realize was that it would take her all the way to Mars. . . .
The second book in the popular Boundary SF adventure series co-authored by multiple New York Times bestseller Eric Flint and Ryk E. Spoor. When the strange fossil she'd discovered gave her a trip to Mars, Helen Sutter thought she'd gone about as far as any paleontologist would ever go in her lifetime. But when you’re married to an overconfident super-sensor expert for the only private agency in space – the Ares Corporation – and your best friend is a former secret agent for the Interplanetary Research Institute of the United Nations, there's always somewhere farther to go. Soon Helen’s new discoveries will lead her to the mysterious asteroid Ceres and beyond in a desperate race to reach Jupiter's perilous miniature system of radiation-bombarded moons. It seems the next gold rush is on–for alien technology. And there are people willing to do anything to get it – even if they must start the Solar System’s first interplanetary war! Praise for the Boundary series: “A genial, fast-paced sci-fi espionage thriller [that is] light in tone and hard on science…” – Publishers Weekly on Threshold
The sequel to Boundary and Threshold . New York Times Best-Selling Author and a Rising Star of SF and Fantasy Continue their Popular Space Adventure Series. The sequel to Threshold , Book Three in the Boundary series. HELL FROZEN OVER Madeline Fathom had miraculously landed the crippled Nebula Storm on Europa. She joined on that frozen moon of Jupiter the stranded crewmembers of the ill-fated EU vessel Odin . The Nebula Storm 's reactor was ruined in the landing, the Odin ’s shuttle can’t make the trip back home, and the only vessel that could have make the journey to save them has just been destroyed by a renegade crewman, bad luck, and the remorseless forces of nature. But Madeline, Helen Sutter, A.J. Baker and the team have one card left to play. All they have to do... is survive lethal radiation, vacuum, and ice as hard as steel while they figure out how to make Nebula Storm fly again. But even as they prepare to make the journey home, Europa has one more discovery waiting for them... a discovery that might be the deadliest trap in the Solar System! About Portal : "Portal is a fast-paced tale that will remind many of classic science fiction from the 1950s and 1960s. If you were a fan of Hal Clement’s stories combining world-building and aliens, Poul Anderson’s space adventures or Robert Heinlein’s tales of competent people in extraordinary circumstances, you will like Portal ... Flint remains one of the leading modern authors of science-fiction, and Spoor establishes himself as a rising presence."— Daily News of Galveston County Praise for previous books in this series: “. . . fast-paced sci-fi espionage thriller . . . light in tone and hard on science . . .” — Publishers Weekly on Boundary “The whole crew from Flint and Spoor's Boundary are back. . . . Tensions run high throughout the Ceres mission . . . a fine choice for any collection.” — Publishers Weekly on Threshold “[P]aleontology, engineering, and space flight, puzzles in linguistics, biology, physics, and evolution further the story, as well as wacky humor, academic rivalries, and even some sweet romances.” — School Library Journal on Boundary