A woman's murder leads the police to discover the actual target was a reporter who did a story about improprieties in a recent senatorial election. Carmichael can't get the reporter to reveal her sources for a story that contains allegations that the vote was fixed and ballots tampered with, even though the reporter's life is at risk. Without the source, McCoy and Carmichael have a difficult time making a case against the Senator, who they believe has ties to the mob and ordered the hit on the reporter. The case hinges on 2000 missing ballots from the vote that were stolen by the mob. Once the ballots are found, there is a big court battle about whether or not the ballots should be counted. McCoy believes that the ballots will show Benton's motive for ordering the hit, but an appellate court won't allow it, so their case is virtually dead. In the end, McCoy is able to convince the reporter to reveal her source and have him testify against the senator.

A star baseball player becomes the prime suspect in the murder of his limousine driver when it is discovered that the driver regularly supplied steroids to the sports icon. The subsequent investigation reveals blackmail as the underlying motive for the murder.

The investigation into the murder of a bounty hunter leads to a reporter with compromised ethics and a dubious defense strategy.

McCoy faces an uphill battle in proving that witnesses to the murder of a drug mule were bribed, intimidated, and eventually murdered on the orders of the drug dealer accused of the crime.

When the investigation into the contract killing of a jeweler uncovers his plan to roll over on his Russian mob connections to a federal prosecutor, as well as an unhappy wife whom he refused to divorce, McCoy must determine who financed the hit.

Fontana and Green are baffled by a series of flu-related deaths until they discover that the victims were given fake vaccine. McCoy goes after the con man who distributed the vaccine for murder.

Police turn their attention to the murder of an undercover reporter, but realise that the killer isn't as guilty as he appears.