Dan is investigated by an arrogant Internal Affairs agent with a personal axe to grind. Meanwhile, Julius is hunted down by the guys he snitched on thanks to the IA agent letting them go.
While following up on a stolen truck investigation, Jack and Dan wind up uncovering a major heist involving a shipment of high-profile diamonds. Meanwhile, tensions rise when Dan discovers Jack is interviewing for a position on an elite police unit.
Liz and Jack's romantic getaway goes awry when Jack becomes suspicious of a bed-and-breakfast owner and Dan comes out to join the investigation.
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 and Dan investigate a spurious inspection report at a corrupt oil company only to discover that they might have actually stumbled onto a deadly criminal conspiracy with Liz’s boyfriend Kyle stuck right in the middle.
Jack and Dan get a tip from a neighborhood kid about a lowlife stealing mail. During the investigation, they come across two identity thieves forging documents for a murderous pair of Mexican drug-runners, killing their way to better lives in America
Dan goofs up when he accidentally outs a witness in the Witness Protection Program. While a hitman from a dangerous crime family searches for the witness to keep the testimony buried, Jack and Dan team up with a U.S. Marshal to protect the innocent and stop the bad guys' nefarious plot.
A string of poisonings leads Jack & Dan to a deadly visitor.
Jack and Dan are assigned to investigate a damaged vending machine at an upscale hotel. When the case leads them to a high-class prostitution ring and a grisly murder, the detectives suddenly find themselves in the middle of a homicide investigation.
Once upon the 1970s, Dan Stark and his partner, Frank Savage, were big-shot Dallas detectives. So big, in fact, that they were lauded as American heroes after saving the Governor's son. Thirty years later, Dan Stark is a washed-up detective who spends most of his time drunk or re-hashing his glory days. Dan's new partner, Jack Bailey, is an ambitious, by-the-book and overall good detective, but is sometimes a bit too snarky for his own good. His habit of undermining himself has earned him a dead-end position in the department, and he is stuck solving annoying petty theft cases that nobody else wants. Worse, he's been given the thankless task of babysitting Dan, the drunk pariah who can never keep partners for long.