Night Vigil - S4.E1

On routine patrol with Corrigan, Stacy is shot when unwittingly walking in on an armed robbery, leaving her hospitalised in a coma and with a bullet lodged dangerously close to her heart. With Stacy facing precarious surgery, Hooker, Corrigan and Romano search out the robbers, who are armed with armour piercing bullets. But Hooker's determination to catch the thugs, no matter what, sees him putting his career on the line...