When open-air drug markets, the geographic clustering of street-level purchasing and selling of drugs illegally, are introduced into urban environments with high levels of poverty, low levels of education, and gang networks, they act as a tipping point for lethal violence. Drug markets create economic incentives to utilize spatial and interpersonal relationships among gangs for generating income, increasing intense competition between and within gangs. Seattle is an optimal city to examine due to the availability of data and low overall homicide rate, making homicide hotspots even more curious. I evaluate my hypothesis systematically by conducting a bivariate and trivariate regression analysis, utilizing homicide, gang territory, and drug market data. I found that open-air drug markets are positively associated with homicide clusters. Further multivariate regressions will be completed that control for multiple factors where homicides are likely to occur, including poverty, education attainment, population density, neighborhood residence stability, gender, age, and race. This project is important for both scholars and policymakers, as a causal explanation for concentrated violence, or hotspots, will contribute to literatures on urban politics, crime, criminology and help identify ways to decrease the national homicide rate.