Tracking 'The Da Vinci Code'

"Good Morning America" takes you on an amazing race as we chase down centuries-old clues. Come along as we try to crack "The Da Vinci Code."

Don't miss "Good Morning America" on Monday, May 23

The novel, written by Dan Brown, tells the story of a Harvard symbologist who is asked to help after police find a coded message near the body of the curator of the Louvre, France's largest and best-known museum. The investigation leads to a trail of clues hidden in the paintings of Leonard Da Vinci.

The novel has been controversial because it raises the question of whether Jesus was married by referencing an alternative interpretation of "The Last Supper" that has Mary Magdalene -- not St. John -- sitting to the right of Jesus in the painting.

But it has been so popular that several companies offer tours that will take travelers to the various sites mentioned in the book. You can follow along from home as "GMA" investigates the clues laid out in the book to find out the real truth behind the "The da Vinci Code."

Co-anchor Robin Roberts will be in Paris at St. Sulpice Church where the quest for quest for the true identity of Mary Magdalene begins in the book.

ABC News Correspondent David Wright will be in Milan, Italy, where Da Vinci's masterpiece "The Last Supper" hangs in the refectory of the convent of Santa Maria delle Grazie.

"GMA Weekend" anchor Bill Weir will be in London at the London Temple church, where the novel claims the first guardians of the secret, the knights Templar, are buried.