The Half-Life — Jonathan Raymond

When Cookie Figowitz, the cook for a party of volatile fur trappers trekking through the Oregon Territory in the 1820s, joins up with the refugee Henry Brown, the two begin a wild ride that takes them from the virgin territory of the West all the way to China and back again. One hundred and sixty years later, Tina Plank, an unhappy teenager, meets Trixie, a girl with a troubled past, and the two become fast friends. But when two skeletons are accidentally unearthed from their common ground, the lives of Tina and Trixie, Cookie and Henry are brought together in unexpected and startling ways.