RecruitingPhase 2Behavioural interventionSafe Treatment for Emergency Presentation for Suicidal Ideation and Behavior in YouthThis randomized comparative effectiveness trial will compare two evidence-based approaches to emergency care for youth ages 13-24 who present to the Emergency Department (ED) with suicidal ideation or behavior. Outcomes will be monitored at baseline and at 3, 6 \& 12 month follow-up assessments.