Season 4

Corey quits High Voltage (i.e. "LA Ink") after an encounter with Kat. However, it appartently is short lived when he asks for his job back and Kat has to decide between the friendship and the shop. While at American Electric, Craig's new tattoo artist and Amy aren't getting along.

Kat consults with the rest of the LA Ink team in order to decide whether to allow Corey to come back. Ruthless and Amy continue to disagree at American Electric.

Kat has still not made a decision about Corey's return to the shop and he unsure what to do concerning his clients in Hollywood. His frustration with waiting causes him to start looking at other options.

Kat decides to bring Corey back after listening to the rest of the crew. However, it maybe too late since he may have changed his mind. At American Electric, the tension explodes between Amy and Ruthless and Paulie is almost speechless when a new visitor walks in.

Rooftop starts a prank war with Nikki Sixx and Corey joins American Electric, severing ties with High Voltage.

Corey dishs the dirt in a magazine interview while Kat travels to New York give bad news to her editor of her second book and meet with Sephora.

Kat wakes up to find that a spider has bitten her eye, and the possibility of surgery scares her just as much as not being able to tattoo. Corey calms the tension at American Electric when he agrees to tattoo Amy and Paulie.

Kat convinces Michael to run a marathon, but after he drops out, she finds other ways to spend time with him. American Electric celebrates its 11th anniversary, and Paulie's refusal to participate angers Craig just as much as Amy's surprise guest.

Kat auctions off a tattoo for charity, Nikki Sixx interviews Dan on his radio show, and the crew goes to see Dan's band at The House of Blues. Corey walks in to find Aubry getting tattooed, and Amy finds herself between a rock and a hard place.

After noticing that her crew is acting strange, Kat starts digging for information only to find that she may have ruined a great surprise. At American Electric, Ruthless realizes that Amy is covering for Paulie and threatens to tell Craig.

Kat takes a long look at Corey's face on the mural and decides that it's time for a change. After an unexplained absence, Paulie returns to American Electric with a careless attitude and Craig is forced to fire him.

Michael and Rooftop are in charge of the next door event space, while Kat decides on whether to go on tour with Nikki or end their relationship. Tensions hit a head between Ruthless and Amy over an upcoming tattoo convention.

Kat's gallery "Wonderland" opens with a party of surprises, including introducing her new boyfriend to the press. Meanwhile at AE, tensions between Amy and Ruthless explode.

In the last 9 months, Kat has had a successful gallery opening, a whirlwind book tour, survived a devastating house fire and got engaged to her soul mate, Jesse James. The High Voltage crew tries to keep up as Kat starts over.

While balancing a long distance relationship with her fiancé, Jesse James, Kat decides to design her own wedding dress with help from the designers of her new clothing line. Later, she heads to NYC for a Sephora photo shoot.

Kat and the crew decide to throw a benefit for the earthquake victims in Japan, but find out High Voltage may not be so safe when the big one hits. Tensions rise when Rooftop and Arianna take Kat's car and blow the tires out.

Kat uncovers Arianna's dark secret, when it becomes a matter of life and death. Meanwhile, Dan plays a dodgy prank that turns the shop into a warzone - and Rooftop takes a permanent hit.

Kat's stress levels reach an all-time high as she must complete a photo shoot in time to showcase her new clothing line to prestigious fashion editors. Michael and Rooftop duke it out in a series of agonizing challenges.

Kat accompanies Jesse to her birthplace in Mexico for arduous off-road in Baja 500 race and the trip could result in a wedding or a trip to the hospital. When Arianna hits 100 days of sobriety, Kat gives her a huge surprise to encourage her.

Kat decides to make some upgrades to High Voltage by hiring a contractor who has his own ideas. While Kat is in Austin, chaos ensues in the shop and on the home front.

When Kat decides to open a new tattoo shop in Austin with Jesse, the High Voltage family fears the shop will close its doors for good after five successful years. Regret is a bitter pill when Kat hears Michael's big confession. Kat faces the toughest decision of her life.