Remini's 'Troublemaker: Surviving Hollywood and Scientology' ranked as the No. 3 best-selling non-fiction hardcover of the week.

Troublemaker: Surviving Hollywood and Scientology, Leah Remini’s tell-all about her experience in Scientology, had a blockbuster first week.

The book landed as the No. 3 best-selling non-fiction hardcover of the week, according to Nielsen Bookscan, which tracks about 85 percent of physical book sales. That ranking translates into 38,000 books sold.

For comparison that’s about twice as many books as Arnold Schwarzenegger’s much-hyped memoir sold one year ago. The top two selling non-fiction books were The Pioneer Woman Cooks Dinnertime and Bill O’Reilly’s Killing Reagan.

Ebook sales, which aren’t tracked by Bookscan, have also been strong. Troublemaker is the No. 1 title on Apple’s iBooks, No. 7 on Barnes & Noble’s Nook and No. 10 on Amazon’s Kindle.

Early excerpts of the tell-all hit the web prior to its release and revealed surprising revelations of Remini's relationship with the Church and fellow Scientology member Tom Cruise. In the book, the actress estimated that she had spent about $5 million in total in order to be a Scientologist, including fees for training courses and donations, and witnessed Katie Holmes abandon Cruise at the altar for 20 minutes at their wedding ceremony.