22 books • 3 series
Celery Brown and the end of the world (The Supernatural Adventures of Celery Brown, #9)
Celery Brown and the courts of heaven (The Supernatural Adventures of Celery Brown, #4)
Celery Brown and the message from Gabriel (The Supernatural Adventures of Celery Brown, #3)
Celery Brown and the girl who isn't frightened (The Supernatural Adventures of Celery Brown, #1)