Sandra Marquez

Sheldon finds himself booted from the gang's Physics Bowl team and replaced with Leslie, so he forms his own team.

Time is running out, and Michael must enlist the help of his cellmate Sucre to help execute his elaborate escape plan. But Sucre wants no part of it and asks for a cell transfer, and Michael's new cellmate Haywire is even worse than he sounds. Meanwhile, Veronica meets a woman who may be able to help stop Lincoln's execution.

Intervention. A patient with a life-threatening heart condition makes a decision that puts Rhodes and Choi at odds, the lawsuit against Halstead moves forward, a patient who was misdiagnosed has a flesh-eating bacterial disease, a girl with a contagious bacteria.

Tom Kane cements his mayoral legacy with a lavish ceremony celebrating the groundbreaking of the new modernized O'Hare terminals.

Kane uses personal tragedy to further his agenda, poaches his nemesis's aide, Mona, and hires ambitious newcomer Ian.

As Meredith forms a new relationship, Kane goes to the greatest lengths yet to stay on top.