In Tanzania, the Marian Faith Healing Ministry offers Catholic healing rituals under the patronage of the Virgin Mary. Exorcism and a special water service are central to the healing process. People bring physical, spiritual and social afflictions before the group's leader, Felicien Nkwera. Combining the perspectives of the study of religions and medical anthropology, the author analyses Nkwera's pastoral texts and the personal healing narratives of the members. Thus, a complex image of the healing process is created and framed within its Tanzanian interreligious context and its global conservative Catholic context.