But teenaged Khadija, daughter of a prosperous family of Moorish business travellers, is unfazed. That's because Khadija is really Annette Klein from 21st-century California, and her whole family are secret agents of Crosstime Traffic, trading for commodities to send back to our own timeline. Now it's time for Annette and her family to go home for the start of another school year, so they join a pack train bound for their home base in Marseilles, where the crosstime portal is hidden.
Then bandits attack while they're crossing the Pyrenees. Annette/Khadija is separated from her parents and knocked out, and wakes up to find herself a captive in a caravan of slaves being taken to the markets in the south. She's in a tight spot.
Then the really scary thing happens: her purchasers take her, along with other newly purchased slaves, to an unofficial crosstime portal...leaving open the question of whether Crosstime Traffic will ever be able to recover her! Harry Turtledove's In High Places is the third book in this parallel adventure series.
At the Publisher's request, this title is being sold without Digital Rights Management Software (DRM) applied.
Katya is a scientist, working on a classified project for the Russian Empire. She's also desperate. Her bosses want to exploit her knowledge and send her on an incredible, dangerous mission. And if she refuses, her father's life will be forfeit.
Katya must retrieve an artefact that will grant new life to the dying Russian tsar. She's therefore being sent deep undercover on an alternate version of Earth, to an American-controlled island. Here Borodin, the tsar's spymaster, will be watching her.
On the island Katya and Jerry, an American adventurer, form an uneasy alliance. They discover the artefact will call down terror from the depths of space, yet Katya's superiors refuse to listen. But Katya and Jerry's worlds face extinction, so the artefact must be destroyed - at any cost. Two civilizations depend upon it.