T.C. and Topher return to find Jordan in critical condition and San Antonio terrorized by snipers.

Paul sustains injuries during a daring rescue at the scene of a multi-car accident.

When a boy has a serious fever, his high-strung mother starts to exhibit signs of distress.

A building collapses during a rodeo; Scott causes a serious car accident.

Jordan and Krista provide roadside care for a motorcycle crash victim.

Drew takes action when a gunman attacks at a friend's promotion ceremony.

A downtown gas explosion sends dozens of casualties to San Antonio Memorial Hospital.

T.C. discovers his sister-in-law's complicated history after he treats her for a fall down stairs.

Amid thick fog, the doctors must improvise to save the victims of a car crash.

Gwen, T.C. and Drew race to the scene of a multi-victim car accident; T.C.'s sister-in-law visits.

Joey, T.C. and Gwen try to rescue an injured skydiver after a near-fatal crash.

A serious car crash puts a pair of teenage newlyweds and a young pregnant woman in the hospital.

T.C., Kenny and Paul try to save a woman who was accidentally shot by her husband.

T.C. is suspended after a breakdown at the hospital; Ragosa returns to the hospital.

With Topher's (Ken Leung) life hanging in the balance, TC (Eoin Christopher Mackin) is haunted by memories of his brother's death in Afghanistan. Jordan's (Jill Flint) treatment of Dwayne's...

TC and Topher treat the lone survivor of a plane crash while fending off an intimidating law-enforcement officer with a secret motive. Meanwhile, Paul must deal with an injured exotic dancer whose condition takes a turn for the worse.

The aftermath of a serious military bus accident threatens to expose the truth about Drew's (Brendan Fehr) relationship with his boyfriend, Rick. TC (Eoin Christopher Macken) and Scott (Scott Wolf) square off over Jordan (Jill Flint).

A series of storms leaves Topher's (Ken Leung) pregnant wife and their daughter stranded on a highway just as she's going into labor. TC (Eoin Christopher Macken) squares off with Jordan's ...

Injuries at an Alamo reenactment test the staff. Meanwhile, a disorientated patient suffering from amnesia receives care; Drew helps a severely wounded soldier; Topher schedules a vasectomy operation; and Jordan's boyfriend arrives.

As Drew (Brendan Fehr) struggles to hide an injury, a series of accidents leaves TC (Eoin Christopher Macken) reattaching a hunter's severed hand and lands Jordan (Jill Flint) in the middle...

A dying sheriff's deputy leaves TC (Eoin Christopher Macken) facing giving him a heart transplant for the second time. Landry's (Daniella Alonso) child abuse investigation produces a startling diagnosis.

San Antonio Memorial's iconoclastic doctors and nurses use their instincts and combat experience to defy the odds and run the chaotic emergency room night shift.