Kristóf's first steps as a writer were in the realm of poetry and theater ("John et Joe, Un rat qui passe"), aspects of her writing that did not have as great an impact as her trilogy. In 1986 Kristóf's first novel, "The Notebook" appeared. It was the beginning of a trilogy. The sequel titled "The Proof" came 2 years later. The third part was published in 1991 under the title "The Third Lie". The most important themes of this trilogy are war and destruction, love and loneliness, promiscuous, desperate, and attention-seeking sexual encounters, desire and loss, truth and fiction.