The Office of Special Services, (colloquially OSS) is a shadowy divison of the Department of Magical Affairs. It is the smallest subdepartment, consisting of a small group of special agents. These specially-trained men and women hunt down practioners of the Dark Arts within Wizarding America, and carry out special tasks for the Secretary of Magical Affairs. The Office of Special Services is comparable to the Aurors of the Ministry of Magic. The OSS is currently headed by Roberta Xerth
One notable undertaking of the OSS is the failed Geranium Project.