Oprah Winfrey stunned viewers on Monday with news that she recently discovered a half-sister she never knew about, but that's only part of the amazing story. Now it turns out that the talk-show queen's sibling, Patricia, cared so much about her sister's privacy and reputation that she turned down a blockbuster offer from a tabloid magazine to expose the truth.

"All Patricia wanted was the truth," an insider tells me. "She wasn't interested in selling her story even for a million dollars. She just wanted to know who she was, where she came from and if she had any brothers or sisters. She had no idea when she started this search she would end up being Oprah Winfrey's half-sister."