Chicago Med

Goodwin finds herself quickly clashing with the new hospital COO Gwen Garrett (guest star Heather Headley) while April questions whether or not Ethan's sister, Emily, is using again.

In the second part of the three-show, one-night crossover event, the doctors and nurses of Chicago Med find themselves on high alert when an overflow of patients are rushed into the doors following a terrifying apartment complex blaze.

When a sick boy is brought in, Ethan is faced with a tough decision that quickly escalates into a complicated and dangerous situation.

Dr. Halstead gets an unplanned visit from the CPD while Ethan is skeptical of a woman who is experiencing chronic pain.

When things become complicated, Will is forced to lie to Natalie. Ethan and April find out some compromising information about Emily's boyfriend and Ava is unsure of what to do with a patient who is refusing treatment.

Dr. Manning and Dr. Halstead become skeptical of a patient's injuries when the victim of a car accident is brought into the hospital.

The hospital is forced to evacuate when a toxic chemical is brought into the E.D., leaving patients and the staff in grave danger. Stuck in an elevator, Dr. Charles and Dr. Manning are forced to take drastic measures with a pregnant woman.

Dr. Charles struggles to convince Dr. Choi that surgery isn't always the answer. Dr. Rhodes finds himself in hot water with Goodwin when he disobeys her direct order.

Will and Natalie prepare for their big day, but an unsuspecting Will soon finds himself sidetracked.

April finds herself in a dangerous situation and Natalie gets an update on Will. Dr. Rhodes gears up for a gala honoring his hybrid O.R. and tries to convince Dr. Bekker to join him.

Will adjusts to hospital life in the aftermath of his recent undercover activities. Ethan and April's personal relationship starts to interfere with their working situation. Dr. Charles and Dr. Manning collaborate on a patient suffering from Alzheimer's.

Dr. Halstead rushes to rescue Dr. Manning after she is involved in a Medevac helicopter crash. The personal drama between Dr. Rhodes and Dr. Bekker boils over.

Dr. Halstead withholds some important information from Dr. Manning and she begins to question his suspect behavior. Dr. Choi comes to some difficult conclusions involving April over a patient's care.

Will's personal issues continue to interfere with his relationship with Natalie and his life at the hospital. Dr. Bekker tries to mend things with Dr. Rhodes.

After witnessing a pick-up truck plow through a street fair, Natalie and Maggie are forced to make some tough decisions on the fly.

Natalie and Will grow further apart. Dr. Charles struggles to come to terms with his feelings toward his ex-wife.

When a car unexpectedly smashes through the ambulance bay doors, Dr. Choi makes some difficult decisions in an effort to save a worker trapped beneath the wreckage and April, who's also in danger.

Dr. Rhodes receives an alarming phone call that prompts him to rush out in the middle of an important surgery.

The hospital goes into lockdown mode when a man with a gun holds medical staff hostage. Goodwin is forced to make a tough decision.

Dr. Charles and Dr. Manning disagree on how to handle a patient who they discover is poisoning herself. Dr. Rhodes throws some serious accusations at Dr. Bekker.

Caroline has news to share, forcing Dr. Charles to make a serious decision about their relationship.

In the season finale, Dr. Charles and Caroline set some major plans. Ava fights to keep her relationship with Connor.