Queens – Bell’s confidence in Quovadis continues to waver when the poster child for one of its medical devices, Henry Barnett, is rushed back into the ER, experiencing seizure-like symptoms. Meanwhile, Mina’s past comes to light when her mother, famous Nigerian surgeon Dr. Okeke, pays a visit to Chastain, and Conrad makes a risky move when Henry returns to the hospital.
Stupid Things in the Name of Sex – Conrad’s attempt to surprise Nic with a lavish Valentine’s Day dinner is foiled, so he gives the reservation away to someone who could really use it. Mina and Devon distract themselves from all Valentine’s celebrations by trying to figure out how their seemingly healthy neighbor has suddenly passed away. Meanwhile, Kit gives dating advice to a sex-injured patient, Irving hits a crossroads in his not-so-secret relationship with Nurse Jessica, and Bell decides to celebrate the day in the OR.
Virtually Impossible – Conrad, Kit, Mina and the Raptor work to save the life of a med student, drawing Bell back to the OR for one of the Chastain’s riskiest surgeries yet.
Fear Finds a Way – A nasty flu season turns out to be masking a terribly infectious disease, forcing Chastain to quarantine and diagnose infected patients. While Conrad, Nic and Alec work tirelessly on Meg, who was Nic’s favorite guard from her stint in prison, Devon and the others treat Sam, a love-sick patient with flu-like symptoms. Mina finds herself testing Quovadis medical devices in an effort to defend Dr. AJ Austin, who feels responsible for the death of a patient and is staying away from the OR.
Operator Error – When a medical device fails on a former Chastain employee, an investigation is opened up, which pits Dr. AJ Austin against Quovadis. As Mina and Bell work to get to the bottom of what went wrong, Devon distracts himself with another patient who’s experiencing mysterious stomach pains. Meanwhile, Nic forms a bond with her new partner at the clinic and Conrad’s relationship with the Barnett family continues to grow
After the Fall – Lane Hunter’s victims and their families become outraged when she is released from prison. Bell, although responsible for posting Lane’s bail and getting her released, continues to be tortured by her manipulation. Meanwhile, Conrad uses work to cope with the news about his father, and he teams up with Mina, Kit and the Raptor to treat a patient who is suffering as a result of Lane’s dangerous treatments. Then, Devon grows worried when he doesn’t hear from Julian.
The Dance – Devon’s doubts about his relationship reach a peak as his friends and family gather for his big wedding day. As Chastain’s leading medical device company, Quovadis, continues to succeed, Julian makes a discovery that leaves her uneasy about her involvement in it all. Meanwhile, Conrad continues to work on his relationship with Marshall and Bell takes a risky offer in order to make a mistake from his past disappear.
Heart in a Box – Conrad goes head-to-head with Bell after he recommends one of Julian’s risky medical devices to Zoey, who’s already lost one son and is back in the hospital with the other. Nic fears that Conrad may be getting overly attached to his patient. Meanwhile, Mina and Austin grow closer while working on a difficult heart transplant, Devon embarks on a very difficult day and Dr. Lane Hunter returns.
Trial & Error – Patients from the hospital’s prescription drug trial start suffering life-threatening side effects, and Nic fears that her sister Jessie may be in danger. As a result, she and Conrad work to convince Bell that these trials are not worth the risk. Meanwhile, Mina, Austin and Kit must set aside their competitive nature and work together on a patient whose health is quickly deteriorating and Devon uses Julian as the beta tester for a product he’s designed.
Nightmares – Halloween at Chastain proves to be just as spooky as ever when Conrad is tasked with diagnosing a young woman admitted to the hospital with extreme night terrors. Meanwhile, Devon faces his first Halloween in the ER, Nic panics over her decision to bring her newly sober sister to Mina’s epic annual Halloween party and Bell finds an interesting way to make use of his new assistant.