Under the Mat: Inside Wrestling's Greatest Family
 The book focuses mainly on the realities of professional wrestling. Under the Mat recounts Diana's life growing up in the Hart home, being sister to Owen and Bret, witnessing their rise to fame and the terrible tragedy which claimed Owen's life. She remembers her father training some of the WWF's and WCW's biggest names in her family's basement gym, the famous Dungeon, and recounts their tales to stardom.