Bond is that part of our legal system in Virginia and throughout the country. A bail bond allows an accused person to be temporarily released from custody. So they can continue their lives while they prepare for their day in court. In criminal cases. A sum of money, real property or surety bond needs to be posted by or on behalf of a defendant. This is to guarantee their appearance in court. The right to reasonable Bail. This is guaranteed to you in the Eighth Amendment of the Constitution of the United States.