* The Kidnapping of Amy McCarthy (1999)
* Chasing Amanda (2000)
* The Search for Sarah (2001)
* Finding Kate (2002)
* The Girl Most Likely (2003)
* The Stranger You Know (2005)
* Until Proven Innocent (2006)
* The Murder Room (2008)
* No Way Out (2009)
* The Edge of Nowhere (2010)
* The Breaking Point (2011)
* The Final Twist (2013)
* The Killer's Shadow (2014)
* Buried Secrets (2016)
* Deadly Games (2017)
* The Girl Who Knew Too Much (2019)
* Shadows of Deceit (2020)
* The Silent Witness (2022)
Non-Fiction
* The Kennedy Women: The Saga of an American Family (1973)
* Jacqueline Kennedy: The White House Years (1977)
* The President and His Son (1978)
* Jimmy and Rosalynn Carter: The Portrait of a Marriage (1978)
* Ronald and Nancy Reagan: The American Story (1983)
* The Personal Story of Ronald Reagan: A Man of Values (1985)
* The Secret Life of Ted Kennedy (1988)
* Beyond the Headlines (1989)
* The Power of Prayer: A Personal Journey (1991)
* The Real Kennedys: A New Investigation (1992)
* The Legacy of Ronald Reagan: A Tribute and a Challenge (1994)
* Voices of America: American Dreams, American Stories (2002)
* The Making of a President: An Intimate Portrait of Barack Obama's Historic Victory (2009)
* God and George W. Bush: Faith and Leadership in the White House (2010)
* The Real Obama: A Look Behind the Mask (2012)
* Beyond Belief: The Secret Gospel of Thomas (2014)
* The Gospel of Thomas: A New Interpretation (2016)
* In Search of the Real Jesus (2018)
* The Lost Gospel of Judas: Unveiling the Truth About Jesus' Most Controversial Follower (2021)
Children's Books
* The Adventures of the Little Prince (2010)
* The Adventures of the Little Princess (2011)