SWAT faces Russian mercenaries who've planted explosives across LA to free their leader Rykov. When he's brought to HQ, the building comes under siege, forcing Hondo's team into a survival fight.
The team is forced to relive the past when they receive a manifesto planning to copycat a previous mass shooting at an area high school with a higher body count.
20-Squad faces down a prison hostage situation, only to be thrown into deeper danger when a bomb explodes, freeing maximum-security prisoners from their cells, including someone with a personal grudge against Hondo.
Harrelson's team is staking out a bus station on a sting operation when a group of felons fleeing from the police burst in and take everyone in the station hostage including the plain clothes officers.
A hijacked car carrier leads Hondo to face a presumed-dead rival as they chase a $60M vehicle. Meanwhile, Gamble's career is threatened when her brother gets involved in the case. Part 1 of finale.
After an explosion at a fruit packing plant where inmates were working, six prisoners escape through the city. Hondo and Squad 20 pursue them and discover that the incident was no accident.
SWAT faces their deadliest adversary yet when a violent cell of extremists looks to extract vengeance by blowing up half of Los Angeles, potentially killing thousands.
When Hondo learns there's a $1 million bounty on his head, 20-Squad must race to uncover the mysterious enemy from Hondo's past who's intent on revenge; Deacon and Tan butt heads over Tan's changes to SWAT academy.
After 3 LA cops are shot dead, Hondo's team works with LAPD psychologist Dr. Hughes to stop a killing spree linked to the dept's poor handling of a past school shooting.
The SWAT team faces off with a family of doomsday preppers barricaded inside their fortress of a home, and Deacon finds himself at the center of the storm.
As 20-Squad scrambles to track down a cold-blooded sniper terrorizing Los Angeles, Hondo discovers a link to his own neighborhood that brings a personal twist to the hunt for the deadly shooter.
SWAT team searches for missing students and bus driver who is Hondo's former coach. Hicks questions new team member Devin Gamble's criminal family ties. Race against time to find victims and resolve personal conflicts within the team.
When a spree of brutal stash house robberies spills into Los Angeles, the team joins with the sheriff's department's gang unit to unmask a violent crew who leaves no witness alive.
When a violent shooting rocks a Los Angeles nightclub, Hondo and 20-Squad are thrust into the dark world of sex trafficking, going head-to-head with a notorious biker club as they race to find a missing girl.
The abduction of Luca and Street's neighbor sends the SWAT team in pursuit of a home invasion crew targeting domestic workers to gain entry into upscale homes; the SWAT division prepares to help Mumford mark a major career milestone.
The SWAT team finds itself under internal investigation after a civilian is killed as they attempted to bring in the city's most wanted criminal. As the mission details are revealed, the force's internal affairs team calls Hondo's leadership into question.
