Well of Souls
1. Midnight at the Well of Souls (1977)
2. Exiles at the Well of Souls (1978)
3. Quest for the Well of Souls (1978)
4. The Return of Nathan Brazil (1980)
5. Twilight at the Well of Souls: The Legacy of Nathan Brazil (1982)
6. The Sea Is Full of Stars (1999)
7. Ghost of the Well of Souls (2000)