Pairing: Anne Boleyn/Henry VIII
Fic Title: Doubt
Genre: Historical, AU, angst
Why This Must Be Read: I've been a fan of The Tudors for a while, but it was only recently that I started investigating the fanfiction scene -- and I found this. I'm also a huge fan of Anne and Henry, and this is a gorgeous what-if for them. The basic premise of the story is the question of what if Henry had been given cause to doubt Anne's conviction of adultery? What if he'd investigated the matter himself, and discovered, once and for all, she was innocent of the charges? The story spirals from there, taking the characters in a completely different direction. Henry has quite a time of it, trying to earn back Anne's trust, and Anne has her own demons to deal with due to her close brush with death. An excellent, excellent story.
In addition to Doubt, I'd also like to recommend that you read ReganX's other Tudor stories as well. They're all amazing, but this one really caught my imagination.