Addressing suicides in public places that have become known as ‘suicide hotspots’ is critical. We will examine which interventions work at hotspots, how and why they work, whether particular features are key to their success, whether they work best in combination with other interventions, whether they have unintended consequences, and whether they are cost-effective. Our research will culminate in a resource that provide practical guidance about how best to deal with suicide hotspots.