Secret Service is fifteen minutes of conversation under a legally binding non-disclosure agreement. Previously, Marlene Haring performed Secret Service at various venues with herself as sole agent. At Modern Art Oxford, she set up Secret Service Agency. The Agency infiltrated the whole building, using spaces normally inaccessible to the public as Secret Service Bureaux. In each Bureau sat a Secret Service Agent, hired by Haring. On entering the Secret Service Bureau, Client and Agent sign a non-disclosure agreement which states that no transaction taking place during the next fifteen minutes of Secret Service may be disclosed to anyone else. Client and Agent each keep a signed copy of the contract.