S.W.A.T. 4x8 Crusade Season 4 Season 1 22 EpisodesSeason 2 23 EpisodesSeason 3 21 EpisodesSeason 4 18 Episodes 4x1 - 3 Seventeen Year Olds (1) 4x2 - Stakeout (2) 4x3 - The Black Hand Man 4x4 - Memento Mori 4x5 - Fracture 4x6 - Hopeless Sinners 4x7 - Under Fire 4x8 - Crusade 4x9 - Next of Kin 4x10 - Buried 4x11 - Positive Thinking 4x12 - U-Turn 4x13 - Sins of the Fathers 4x14 - Reckoning 4x15 - Local Heroes 4x16 - Lockdown 4x17 - Whistleblower 4x18 - Veritas Vincint SWAT searches for a group of extremists carrying out coordinated attacks against local businesses. Also, Deacon and his wife, Annie, find themselves at odds when Annie wants to enroll their daughter, Lila, in private school.