RecruitingBehavioural interventionDynamic Deconstructive Psychotherapy Versus Brief Intervention and Contact for Suicidal Adolescents and Young AdultsThe purpose of this clinical trial is to assess whether 6 months of treatment with Dynamic Deconstructive Psychotherapy (DDP) is more effective for reducing thoughts of suicide in suicidal adolescents and young adults than usual care in the community supplemented with Brief Intervention and Contact (BIC). DDP and BIC are two evidence-based practices shown to be more effective than usual care at reducing suicidality. Participants will be randomly assigned to receive DDP treatment with safety planning and optional medication management or BIC treatment with safety planning and optional medication management. Participants in both groups will receive the assigned treatment at SUNY Upstate Medical University's Psychiatry High Risk Program (PHRP). Each participant is anticipated to take part in this trial for up to one year.