Caitlyn Jenner is releasing a memoir — and the Kardashians are terrified about what she will reveal about the famous family.

The highly anticipated tell-all, Secrets of My Life, will hit bookshelves in April, and sources reveal exclusively Life & Style that her ex-wife Kris Jenner has the most to lose.

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Kris, 61, underwent a psych evaluation during her divorce from Robert Kardashian, and those hidden records have now surfaced — and Caitlyn, 67, could go into even more details about the momager's psychological issues.

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"Caitlyn wants to reveal Kris’ true motives when it comes to how she manages the family,” says an insider.

Among the court documents obtained by Life & Style, Kris is called “selfish” and “superficial,” and is deemed "exploitive in her close relationships."

Yikes!

For more on Caitlyn's explosive tell-all, pick up the latest issue of Life & Style on newsstands now. In the meantime, see how much the Kardashians have changed since Season 1 in the gallery below!