In this post, part of a series on Bail Reform in North Carolina, I discuss preventative detention of defendants who are too dangerous or who present too great a flight risk to be released pretrial. At least twenty-two states, the District of Columbia and the federal system provide for pretrial preventative detention through constitutional or statutory provisions. Although neither the North Carolina constitution nor the General Statutes expressly provide a procedure for it, pretrial preventative detention occurs in North Carolina in two ways. First, the General Statutes allow defendants charged with capital murder to be held in jail without conditions. Second, due to concerns about public safety, flight, and obstruction of justice, other defendants are intentionally detained pretrial through the imposition of unattainably high bonds. The use of a secured bond for preventative detention is an imperfect solution for this simple reason: if a high risk defendant has sufficient resources, he or she can pay the bond or bail bondsman’s fee and walk out of jail with no supervision. But for many defendants, when a judicial official sets what is meant to be an unattainably high bond for the purpose of holding a defendant pretrial, that goal is achieved: the defendant remains in detention. Preventative detention—whether implemented through a statute or through the use of unattainably high detention bonds—must comply with the constitution. In a paper (posted here) I explore the constitutional parameters of preventative detention, provide guidance to policymakers and stakeholders on the core components of a constitutionally compliant preventative detention scheme, present several model preventative detention schemes, and discuss related issues. In this post, I offer a quick summary of the constitutional requirements for preventative detention.