This book explains how to explore psychosocial issues influencing adolescent crime in Mathare Valley, Kenya. Rev. Abang a explores the developmental and psychological conflicts experienced by adolescents in Mathare Valley that influence them to commit crime, find out familial structures that influence adolescents to criminal lifestyle, investigate probable ages in psychosocial issues influencing adolescent crime, and to propose clinical intervention for the problem of adolescent crime in Mathare Valley. The author discovered that the youth are easily hired and recruited for crime gangs and sects, and commit robberies, while girls engage in prostitution among other crimes.This book is highly recommended for the scholars, teachers, students and researchers who are doing more on psychosocial studies in slum.