Jack and Dan are given a routine case about stolen humidifier, which soon escalates into a case involving drug runners, hired assassins, a plastic surgeon, and a golf bag filled with drug money.
An investigation into dog poisonings leads Jack and Dan to a sympathetic father who is in over his head as he works on tampering with chemicals and disrupting the meth trade in South Dallas.
The department is tipped off about a getaway driver who may be part of a future bank robbery, but Dan convinces Jack to trust his hunch that the information is not credible.
While Jack and Dan sit in a bar while they are supposed to be doing a stakeout at an electronics store, Dan runs into a mobster from an undercover sting he was working on seven years earlier.
When Dan accidentally exposes a participant in the Witness Protection Program, it prompts a dangerous crime family to send a hitman after the witness to prevent him from testifying. In order to protect the man, Jack and Dan must join forces with a beautiful yet no-nonsense U.S. Marshal before time runs out.
Already suspended from the force for his latest escapade, Dan stumbles onto a plot to spring a violent cop killer from prison when he tries to help an informant pay back a loan shark.
While Jack and Dan are forced to work for an arrogant forensic scientist as they track down a hacker, A.D.A. Traynor investigates a prostitute's accusations against a corrupt state senator.
Acting on a tip from an 11-year-old, Jack and Dan uncover a plot to falsify legal documents for two violent Mexican drug dealers who are coming to America.
"Savage & Stark" reunite one more time when Dan turns to his ex-partner after the governor's son they saved 25 years ago is kidnapped again, and Dan is framed for the crime.
Jack and Dan are forced to use Jack's Uncle Nate, a con artist who once stole his family's money, in an undercover operation to catch a thug who has been hired by developers to scare residents out of their homes.
Jack and Dan start a neighborhood watch after Ruiz is the victim of a peeping Tom. However, they accidentally stumble upon an assassin hired by an oil company to kill a team of whistleblowers, led by ADA Traynor's new boyfriend.
While investigating a stolen painting at a doctor's house, Dan faints, and is restricted to desk duty until he recovers. Despite the handicap, Jack and Dan must find and capture the mysterious art thief, who may have left more at the crime scene than he intended.
Jack's romantic getaway to a bed & breakfast with Liz is short-lived when the proprietor begins acting suspiciously after he learns that Jack is a cop.
While Jack and Dan tackle a case involving car thieves who accidentally steal smuggled diamonds, Dan becomes angry with Jack when he finds out that he has an interview with the DPD Strike Force.
Jack becomes suspicious when his ex-partner, now a deputy police chief, frames his "dine and dash" suspect for a murder that he couldn't have possibly committed.
