Kimberly Huie

An ambulance crash endangers the lives of the paramedics involved; Bailey treats a patient who refuses her help; Ava returns for Alex and meets his other girlfriend.

Meredith furiously works to save the life of a paramedic trapped in an ambulance; Lexie holds a patient's life in her hands; Derek must rely on a nurse's help to save a patient; Bailey struggles to balance her personal life with work.

As Paige's involvement with her parents' world deepens, tensions boil over with Matthew Beeman; Stan faces consequences at the FBI.

In the wake of violent targeted attacks on 15 Division, Andy, Swarek and their fellow officers begin to piece together a past crime to find out what has happened to Oliver Shaw. While the squad desperately tries to find him, Dov and Wes clash.

An officer's short-tempered relative gets him in trouble; detectives investigate the attack on Captain Bass' wife.

Dylan escorts Elssbett, the Sabra first daughter, to her wedding to the son of the Jaguar archduke, an arrangement that could bring peace to the rival Nietzchean prides.