: Their relationship reaches a breaking point when Leyla discovers Lauren bribed her way into a residency spot.

: Helen and Max track the infection's movement through the Emergency Department.

: Dr. Mark Walsh, a recurring and beloved character, becomes infected and falls into critical condition, making the search for a cure deeply personal for the team. The Unorthodox Solution

: They eventually discover that the bacteria is breeding in the hospital's ice machines .

The story of the New Amsterdam episode (Season 4, Episode 10) serves as a high-stakes mid-season finale centered on a deadly medical crisis that interrupts a major life transition for the show's lead characters. The Departure and the Crisis