Sci-Fi Trivia Mystery Cache

The cache is located in River Front Park, near the Feather River. You can drive right to it, after solving the puzzle below. And, beware of thorns at the site.

1. Theo and Kee meet a Romanian woman named Marichka
2. John Smith is an alien from the planet Lorien (entire last word)
3. Roy travels to "Devils Tower"
4. Cooper pilots the Endurance
5. Jim Holden's X.O. (1st name, 3rd letter)
6. Kyle falls in love with Sarah Connor (1st word, 2nd letter)
7. Jake and Neytiri choose each other as mates
8. Robert Neville wards of nocturnal albino mutants (1971 film, 2nd word, last letter)
9. Roy claims his memories "will be lost in time, like tears in rain"
10. "This is Ripley, last survivor of the Nostromo, signing off."
11. Hal claims he is "foolproof and incapable of error"
12. Mark Watney is left behind on this planet (2nd letter of planet)
13. Taylor is saved by Zira and Galen (last word, +2)
14. It hid in Eliott's tool shed
15. Neo meets Trinity, and later Morpheus (2nd word, 5th letter)

You can validate your puzzle solution with certitude.