The 126 crew responds to a military tank on the loose in downtown Austin and a human pile-up at the roller derby; a new paramedic captain joins the team; Owen is reunited with his ex-wife.
The Red Cell team travels to Cincinnati to track down a killer who is targeting single businessmen in upscale hotels.
A Navy reservist's body is found in a beat-up car at the end of a gun range; Kasie weighs the pros and cons of buying a gun.
Rox's former step coach arrives at the hospital with the local team after a pyramid stunt goes wrong. Noa pleads with Leanne and Campbell to try any other method before performing an emergency hysterectomy on a young teenage girl.
There are plenty of suspects when a beauty company's top sales person is murdered. Plus, Adam manages to make a new friend.
