Metaphorically speaking, Sagittarius, you have unearthed or are about to unearth a rare fossil. I think it's a pretty sensational discovery. It's a missing link that could help you make sense out of episodes in your past that have always mystified or frustrated you.
I urge you to learn all you can about this fossil. Follow every lead it points to. And ask your intuition to run wild and free as it dreams up possible interpretations to its multiple meanings.