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| title | media type | ISBN-13 | year of publica- tion | |
|---|---|---|---|---|
| Der letzte Papst | Gebundene Ausgabe | 978-3-938516-53-9 | 2007 | |
| Der letzte Papst | Taschenbuch | 978-3-426-63254-3 | 2006 | |
| Der letzte Papst | " | 978-3-404-14260-6 | 1999 | |
| Die Macht und die Herrlichkeit. Der Vatikan-Roman | Gebundene Ausgabe | 978-3-905414-90-5 | 1989 | |
| Hostage to the Devil: The Possession and Exorcism of Five Contemporary Americans | Paperback | 978-0-06-065337-8 | 1992 | |
| Hostage to the Devil: The Possession and Exorcism of Five Living Americans | " | 978-0-06-097103-8 | 1987 | |
| Jesus Now | Hardcover | 978-0-00-215375-1 | 1975 | |
| Jesus now | " | 978-0-525-13675-0 | 1973 | |
| Keys of This Blood: Pope John II, Gorbachev, and Struggle for New World Order | " | 978-0-671-69174-5 | 1990 | |
| Keys of This Blood: Pope John Paul II Versus Russia and the West for Control of the New World Order | Paperback | 978-0-671-74723-7 | 1991 | |
| King of Kings | Hardcover | 978-0-671-24707-2 | 1980 | |
| Rich Church, Poor Church | " | 978-0-399-12906-3 | 1984 | |
| Scent Of Roses | Mass Market Paperback | 978-0-7783-2326-6 | 2006 | |
| The Bride's Necklace | " | 978-0-7783-2125-5 | 2005 | |
| The Decline and Fall of the Roman Church | Paperback | 978-0-553-22944-8 | 1983 | |
| The Decline and Fall of the Roman Church | Hardcover | 978-0-399-12665-9 | 1981 | |
| The Devil's Necklace | Mass Market Paperback | 978-0-7783-2199-6 | 2005 | |
| The encounter | Paperback | 978-0-385-27904-8 | 1983 | |
| The Final Conclave | " | 978-0-671-82484-6 | 1978 | |
| The final conclave | Hardcover | 978-0-8128-2434-6 | 1978 | |
| The Handmaiden's Necklace | Mass Market Paperback | 978-0-7783-2207-8 | 2006 | |
| The Jesuits | Paperback | 978-0-671-65716-1 | 1988 | |
| The Jesuits: The Society of Jesus and the Betrayal of the Roman Catholic Church | Hardcover | 978-0-671-54505-5 | 1987 | |
| The New Castle Reaching for the Ultimate | Paperback | 978-0-525-16553-8 | 1974 | |
| There Is Still Love | Hardcover | 978-0-02-580440-1 | 1984 | |
| Three Popes and the Cardinal | " | 978-0-374-27675-1 | 1972 | |
| Vatican | Paperback | 978-0-515-09654-5 | 1988 | |
| Vatican | Hardcover | 978-0-436-27433-6 | 1986 | |
| Vatican: A Novel | " | 978-0-06-015478-3 | 1986 | |
| Windswept House | " | 978-0-385-48408-4 | 1996 | |
| Windswept House: A Vatican Novel | Paperback | 978-0-385-49231-7 | 1998 |