A plane crash in Philadelphia takes out the city's main power grid making it difficult for Megan and the rest of the team to conduct the necessary autopsies. While investigating the plane crash, Tommy and Adam are involved in a serious car accident.moreless
Isabel's new boyfriend is robbed of his memorabilia collection and Walter does his best to help. Hoping to earn her trust, Walter and Leo involve Willa in the case.
Don may find his past casesscrutinized as Abby and Lina investigate his former partner Paul, for the attempted murder of his wife. Meanwhile, Lina is worried about the working relationship she and Abby have but is wondering if the relationship will change due to the upcoming birth of her baby. Abby's relationship with Danny and Brody begins to heat up as both continue to compete for her.moreless
Don is worried about his wife's decision to hire local convicts to work in her bakery and what consequences they could possibly pose for the family. Abby and Lina have to figure out what went wrong with a hazing at a recruitment academy in Chicago.moreless
Lina andAbby look into why a Chicago police officer killed himself. They also look into see ifa department Chaplin's troubles are connected to the death of the police officer. Abby is having A surprise birthday party but the people behind the party don't know whether to invite one or both of her dates.moreless
Lina & Abby wonder why a girl was trampled during a happy occasion that took place at an annual convention. Also just as they begin to investigate that case of another investigation has Abby and Lina wondering why a detective is falling from a balcony.
Don gets uncomfortable when he sees Mackie in a relationship with someone who may have a questionable pastmoreless
Abby and Lina have the unfortunate task of investigating a member of IA whom it and they believe is about to get herself into more trouble then she anticipated.
Brody has fallen in love with Abby and goes to abbey's mom to see what motherly advise she can give on an how Brody can win Abbeys heart.moreless
When attempts are made to save the man who collapses in front of Abby fail due to CPR and the 911 system not working causes both Abby and Lina to look into Y why 911 responses are being delayed. The Kowalski family gets a surprise win their son Donnie tells them he wants to try out for the swat team causing secrets to be revealed that may cause more tension within the family.moreless
The investigation into why a female psychiatrist is being stalked by a police officer takes an interesting turn after the case shifts direction causing Abby and Lina to look for a different suspect.
Ritchie may have made a bad decision in choosing a new partner, what he doesn't realize is that the new partner doesn't care about the law. Abby's relationship with Danny just got more exciting.
A stripper is murdered, but IAD is called in when it's discovered that the dancer was working at a club that caters to cops.
The coroner's office is missing a body, but it turns up in a popular online video.
Abby is upset that she can't play on the heroes bowl against the fire department because the police department feels that because of opposition in the police department it wouldn't be appropriate to play on the side of the police department.moreless
An ex-con accuses the Chicago Police Department of harassment, and Abby and Lina are on the case. Meanwhile, Detective Carl Scott tries to get more details on the Kowalski case by propositioning Abby.moreless
Abby Kowalski is a new detective in the Chicago Police Internal Affairs Department. This job is extremely difficult for her, not only because her father and 3 brothers, who are all cops, are not speaking to her because they see her new position as a betrayal to them, but because her favourite brother Richie has just recently shot and killed a teenager on the job and is now being investigated by her department. She's not allowed any involvement with her brother's case, so she takes on another one where she has to help Chief Judee Carmen in Organized Crime find a mole in her unit. Finding this mole at this point is crucial because Judee Carmen is about to take down the extremely dangerous Nigerian Crime boss Dunsimi.moreless
Abby Kowalski recently joined internal affairs but there is one problem with that, her family has no idea that she joined internal affairs. Now she has to try and convince her family that she made a good decision.moreless
Stefan and Damon find a common enemy and someone they deem to be a threat. Meanwhile, Elena confesses her love for Stefan and persuades him to stay in Mystic Falls, but she also makes a devastating discovery that adversely affects her relationship with him. Jeremy takes up drawing fantasy creatures again.moreless
Elena seeks answers from Stefan about all the bad things happening in Mystic Falls. Stefan reveals how the rivalry with his brother began through a series of flashbacks. Damon controls Vicki's future. Meanwhile, Sheriff Forbes and Mayor Lockwood try to protect their town.moreless
Elena and Jenna have a problem with Jeremy's relationship with Vicki. Stefan comes clean about his past to Elena. At a fund-raiser, Bonnie is taken aback by how advanced her powers are, and turns to her grandmother for guidance. Elena uncovers some news about the Salvatore family.moreless
Elena and Stefan go to the town's annual Founder's Party. Vicki wants Tyler to take her to the party. Damon tells Elena about the history of the Salvatores. Stefan tries to cut Damon out of his life.moreless