Frequently, treatment for smoking cessation is unavailable to youths in the juvenile justice system, and when treatment is available, it may be provided using untested therapies. This study extends previous research by rigorously evaluating smoking cessation interventions specifically for teens at highest risk for continued smoking in adulthood. The investigators will examine processes contributing to the efficacy of treatments. The development of effective smoking interventions for juvenile detainees has the potential to reduce a significant public health concern in this undeserved and high-risk population.