Jails are the largest service providers of mental health in the United States. Unlike prisons, where all incarcerated individuals have been convicted of a crime and are serving long sentences, most individuals incarcerated in jails are waiting a disposition to their court case, making this pretrial environment particularly chaotic. Jail detainees have higher prevalence rates of mental illness, trauma, suicide, and substance use than individuals in the community or even in prisons. Adequate mental health interventions are essential to prevent suicide; to mitigate acute psychopathology,...