Cynthia Kaye McWilliams

Teresa Colvin, the city's first female superintendent, petitions for a corruption task force to investigate an entrepreneur-turned-politician; Colvin's ex-partner, Jarek, investigates a suspicious murder with his new partner, Caleb.

Michael and Lincoln experience car trouble; Sucre tries to stop Maricruz from taking a gamble; C-Note wants to reunite with his wife and daughter; Bellick partners with an unlikely ally.

Flashbacks unveil how Lincoln, Sucre, T-Bag, C-Note and Dr Sara ended up in prison and what drove Michael to plan his brother's escape.

As Michael struggles to remember missing pieces of the prison schematics, guards place him in solitary for refusing to name names.

Alderman Gibbons visits the family of a fallen police officer; Jarek and Caleb follow up on Liam's leads; Vonda and Isaac are promoted to the organised-crime task force.

With Lincoln's execution just minutes away, the team make a break for it.