A murder attempt on an injured firefighter draws Team One into the world of serial arsonists.

Dr. Toth confronts Parker with devastating news; Team One responds to a break-in at a bio-lab across town.

Team One defuses an explosive conflict at a high‐security psychiatric hospital, only to find that a patient has escaped.

When Sam's sister is threatened, Spike steps up to protect her and ends up forced to square off against his own team.

A heist at a stadium lures Team One into an ex-cop's plan to defeat the man he blames for ruining his life - Sgt. Greg Parker.

When a Chinatown gang kidnaps a local shop owner, Team One ends up on a collision course with his fearless daughter.

When shots are fired at Donna's wedding, the team races to save their old colleague, uncovering a vendetta from Donna's past.

An armed robbery exposes a mother's double life, while Ed gambles with his own safety and a promise he made his family.

When a ransom drop goes wrong, Team One is drawn into the dangerous world of 'express kidnapping'.

Team One tracks a masked gunman terrorizing a group of teenagers.

As Parker negotiates with hijackers, the rest of Team One prepares for the worst – a tactical response not everyone will survive.

Spike leaves his dying father's bedside to help Team One diffuse their largest bomb threat yet.

A new recruit joins the team on one of the traditionally toughest days of their year.

Team One struggles with a secret that could compromise their drug bust and end Wordy's career.

The armed abduction of a mother and daughter leads the SRU to a broken family, a ruthless betrayal, and a deadly conclusion.

Team One goes up against a notorious serial armed robber with a huge online following.

Team One's armed escort of a police officer acquitted of killing an unarmed black student is jeopardized by a riotous mob.

Team One races to track down Ed's shooter, while his wife has problems delivering their baby.