This R34 application proposes to conduct an adaptation, implementation, and pilot testing of the culturally centered CBT protocol, the Socio-Cognitive Behavioral Therapy for Suicidal Behaviors (SCBT-SB), among suicidal youth in Mexico City, Mexico. SCBT-SB is a psychosocial treatment developed with the support of the NIMH specifically for suicidal Hispanic youth. SCBT-SB is available in Spanish, has an established training model, and has yielded promising results in intent to treat analyses in reducing suicide attempts and depressive symptoms in comparison to treatment as usual (TAU). Furthermore, it is the CBT protocol with the most empirical evidence for Latinx youth with suicidal behaviors. SCBT is attuned to the cultural needs of Hispanic suicidal youth in real-world service settings. The "EPIS" implementation framework (Exploration, Preparation, Implementation, and Sustainment) and the Ecological Validity Model (ECV) will guide the SCBT-SB implementation and cultural adaptation into the Mexican culture and mental health system. The study will be conducted in one of the main public hospitals in Mexico City, the Hospital Psiquiatrico Infantil "Dr. Juan N. Navarro". In line with this objective, the following research aims are proposed: Aim 1: Adapt the SCBT-SB for its implementation and pilot testing in the Mexican public health system. An open trial with 10 participants will be completed as part of the adaptation process before the pilot randomized controlled trial (RCT). Aim 2: To conduct a pilot RCT to assess feasibility, acceptability, and treatment effect of SCBT-SB in clinical outcomes versus treatment as usual (TAU). Participants will be 60 youth ages 12-17 admitted to the inpatient units receiving services for suicidal thoughts and behavior (STB). STB and depressive symptoms will be examined at baseline, at hospital discharge (approximately 2 weeks), six-, and 9-months following baseline. Aim 3: To identify organizational/system-level, provider-level, and client factors that may promote or hinder uptake of the new intervention in the public system.