Patricia is the author of critically acclaimed books on saints and related topics, such as mysticism, healing, and supranatural phenomena. Her first book A Man for Others (about St. Maximillian Kolbe) was published in 1982 by Harper San Francisco. It is still in print - as are all Treece's books - and has been translated into a number of languages, anthologized, been a book club selection, and acclaimed by secular as well as the religious press.   Treece's other works include The Sanctified Body, Messengers (now in paperback and retitled Apparitions), Meet Padre Pio, and the bestselling Mornings with Therese of Lisieux. Treece has traveled extensively to saints' shrines and archives to research her many popular titles. Until health problems forced her to take a break, she was also for years the saints’ columnist for the Los Angeles archdiocesan newspaper The Tidings. 

Patricia makes her home in Portland, Oregon.