Book excerpt: This issue of Critical Care Clinics, edited by Mervyn singer and Manu Shankar-Hari, includes: Sepsis 3.0 Definitions; Epidemiology and Outcomes; Pathophysiology of sepsis; Pathophysiology of Septic shock; Mechanism of organ dysfunction in sepsis; Endocrine and metabolic alterations in sepsis: challenges and treatments; The immune system in sepsis; Nutrition and Sepsis; Common sense approach to managing sepsis; Biomarkers for sepsis and their use; Personalizing sepsis care; Novel interventions - What’s new and the future; and Long term outcomes following Sepsis.