Sue tries to honor a dying woman's request that her daughter's killer be brought to justice. Bobby, Jack and Myles have a good-natured competition over who can draw the highest bids as the dream dates for a charity auction.
In an effort to get close to a suburban husband and wife suspected of having terrorist ties, Sue and Jack go undercover as a married couple. Meanwhile, Bobby, Dimitrius, Tara and Myles discover a previously unknown terrorist sleeper cell.
Sue must use her cultivated friendship with the wife of a missing terrorist to help the FBI find him before he makes good on a promised attack. Jack and the rest of the team race against time to stop a related sleeper cell in a terrorist strike.
When Tara shoots a robber in a hair salon, her security is tested by family of the deceased. Sue and Lucy take care of an owner-less dog they found at the park.
When a journalist is murdered, Sue, Jack and the FBI team are called in to work the high-profile case. Meanwhile, Sue helps a congressional aide with his "Get Out The Vote" campaign, then discovers he has more than voter registration on his mind.
Sue's dependence on her hearing dog Levi is threatened when Levi gets lost – and a devastated Sue must face the possibility of life without her best friend. When Bobby goes undercover as a gambler – the team might lose more than just the next hand.
