In this chapter we focus on the relationships between third parties and the principal or agent. When the agent makes a contract for his principal or commits a tort in the course of his work, is the principal liable? What is the responsibility of the agent for torts committed and contracts entered into on behalf of his principal? How may the relationship be terminated so that the principal or agent will no longer have responsibility toward or liability for the acts of the other? These are the questions addressed in this chapter.