Kill Everyone, a poker strategy guide by Lee Nelson, Tysen Streib, and Steven Heston, offers advanced techniques for No-Limit Hold'em tournaments and Sit-n-Gos. The book features commentary by Bertrand "Elky" Grospellier, adding further insights. It covers various aspects of the game, including early-stage play, endgame strategies, dealing with different opponent types (especially "hyper-LAGs"), and exploiting suboptimal play. Mathematical analysis is integrated throughout, emphasizing concepts like fold equity, fear equity, and the Independent Chip Model (ICM). The authors also discuss tournament luck, playing against better players, and reading tells.