They often said it was death threats from evolutionary biologists that had first driven the two of them together. Biologists were too worried for their own lives to threaten others. What fueled their relationship were the same things that drove their often competitive work as professional forgers of fossil remains: one-upmanship, greed, and a combination of both that they passed as love.
Perhaps if they had been honest about their relationship it wouldn't have evolved the way it did. But Nature builds crabs and bad endings again and again with, one fears, a self-satisfied smile.
The last forgery attributed to either one of them would become their best-known. Not just because they had disappeared weeks before — the androgynous humanoid skeleton nobody could prove was not a hundred million years old had the alien beauty of a forgotten promise, and the cops would not even hypothesize which one of them it had been.
(Originally posted on my blog.)