Chase Ryan Jeffery

The 1987 drive-by shooting death of a little girl, the innocent victim of what was assumed to be a gang retaliation attack, is reopened after the murder weapon suddenly turns up as part of the city's gun recovery program. Rush and the team discover the gun has had multiple owners, all of whom were affected in some way by its possession.

Jonas goes to Indonesia on a rescue mission, Mack is shot during a training exercise and the wives entertain a female Senator who could approve additional training funds for The Unit.

Sean and Christian reluctantly accept the case of Trudy Nye (Lisa Waltz), who wants her nose fixed.

In part one of a two-part episode, Horatio's past comes back to haunt him when Julia has him arrested for murder.

The team members investigate when a man and his 18-year-old daughter mysteriously go missing. They suspect that the father's hazardous job as a professional crime-scene cleaner is somehow connected to the pair's disappearance.

After Skyler discovers a misplaced iPod at the bookstore, Gavin scores a date with the attractive, young owner. But he regrets his decision when he learns that her taste in music isn't the only thing she lied about.