كيفين ج. أوكونور

Voight and team are on the trail of kidnappers who have snatched the daughter of a politician and her friend.

A case which sees one of the team taken hostage by a father who is demanding that Intelligence find his daughter who he believes has been kidnapped.

A huge drugs bust operation endangers Olinsky's family. Meanwhile, the team makes some connections between the drugs suspects, and Burgess and Roman are paired up with a K-9 officer who happens to be Roman's ex-girlfriend.

Chicago's finest vow to prove the link between the killing of a ten-year-old witness and the up-and-coming basketball player whose career would be damaged by her testimony.

On Kim Burgess's first day, four masked gunmen burst into a downtown health club and shoot four lawyers from the same organisation. Lindsay's downward spiral continues as she struggles with feelings of guilt over Nadia's death.

The intelligence unit joins forces with detectives Rollins, Amaro and Benson to bring down a child pornography ring once and for all.