Katie Contractually Obligated to Scientology?

A shocking new unauthorized autobiography on Tom Cruise claims that not only did Katie Holmes signed a contract committing to Scientology, but that she also signed a pre-nup that nets her 3 million dollars for each year of marriage that was brokered by none other than Katie's own father, according to Us!

The alleged Scientology document was signed when Tom and Katie started dating, according to the book's author Andrew Morton, that pledges Katie must "turn only to Scientology's treatment" and "must never use psychiatric care or psychiatric drugs."

Although Katie's rep has no comment, the Church of Scientology refutes these claims, telling the mag that Katie signed no such agreement.

These seem to be some fairly outrageous claims - do you think there's some truth to them?