Fic: Tangrams (3/3, Adult)

Title: Tangrams
Characters/Pairing(s): duplicate Doctor/Rose, duplicate Doctor/Rose/River
Rating: Teen for chapters 1 & 2; Adult for chapter 3
Word count: 5,800 (this chapter)
Spoilers: none
Warnings: none
Beta: platypus
Summary: River Song unexpectedly arrives on Pete's World. What could possibly go wrong?
Disclaimer: Not mine, obviously.

Author's Notes: The third story in my Across the Universe series, but as with the other stories in that series, this one stands alone, and there's no need to read the others to follow along. Huge thanks to platypus for helping the story make any sense at all outside of my head.

::xposted to dwfiction, time_and_chips, spoiler_song, and archived at Teaspoon and AO3

( fic, after the cut )