Heather hosts her own birthday bash in the Season 6 opener. Also: Aviva tries to make amends with Ramona; and the ladies are introduced to Heather's friend, Kristen Taekman.
Cara tries to fix a bromance break up while Dave incurs the wrath of Marion. Azza has serious girl trouble.
A new girl tries out for Abby's team; Cathy prepares her team to end Abby's winning streak; Abby's girls dance at a nursing home to cheer up Abby's mother.
Lt. Severide hits the top of the list as Det. Lindsay starts calling in suspects with the clearest motives to make the guy who kidnapped Katie disappear. Meanwhile, Jones is still having trouble fitting in as word of her disruptions reach the fire department’s headquarters. Elsewhere, Herrmann celebrates his twentieth anniversary with his wife, but no one supports his idea on the gift he intends to give.
Jo decides to run for student body president; Lacey wants to know what Danny is hiding.
Raylan partners with a maverick DEA agent whose bad behavior feels uncomfortably familiar, while Boyd makes a hard choice to protect Ava.
Malik undergoes physical therapy for his arm; Tasha faces a difficult decision.
The team gets a large sheet-metal order for their '70 Plymouth Superbird; owners of a '72 Charger reveal what made their vehicle so special; Daren receives an offer for his '70 Challenger R/T.
When Kate finds Pete’s old wedding videos with Diane and Jackie, she realizes she robbed herself of that special memory by eloping and is now determined to have a redo and plans her dream wedding. Meanwhile, Diane decides to take her relationship with Russ Bradley Morrison public and Jackie struggles to tell Bert she’s dating Sad Steve.
When Charles makes Jake his best man, it means cake tasting, choosing flowers and convincing fiancée Vivian that Charles doesn't want to move.
A pit stop at a liquor store leads to a deadly standoff for bank robbers Seth and Richie Gecko, who are making a run for the Mexican border.
Bikini clad twins try to endure the remaining 10 tattoo artists all drilling them at once. An injury sends one Artist to the emergency ward.
Pierce receives a tip that the CIA might be assassinating U.S. citizens; one of Pierce's close friends is murdered; Moretti tries to overcome her trust issues.
The guys build a large camouflaged shelter for a biologist and his uncle in the middle of a swamp. The two plan to use the man-sized eagle's nest to observe nature.
When a food truck chef dies suddenly, all signs point to poisoning; Tommy announces some big plans; Maura's birth mother tries to make amends with her daughter.
Since the original vampires were stuck in the cemetery, Klaus takes any chances to punish his sister with the Original-killer stake.
Old wounds are painfully reopened for the shocked residents of Ravenswick, as Detective Inspector Jimmy Perez and his team look to a past crime to solve the present day murder of a young teenage girl.
Savannah is turning sweet 16, and a big birthday bash is in the works. Todd has to come to grips with the fact that his little girl is growing into a young woman.