The CSIs investigate a present-day crime with ties to a mob heist that occurred 25 years ago. Meanwhile, Brass has a decision to make when his daughter attempts suicide.
Doris needs Steve's help on a clandestine mission to take back an incriminating microfiche. Kono is in jeopardy whilst getting closer to finding out Adam's secret.
Neal and Peter try to get their hands first on the evidence box before Senator Pratt can interfere.
Neal and Peter have to deal with sculpture forgeries and a new boss. Meanwhile, Neal's father returns and Mozzie and Neal get closer to the evidence box.
The daughter of a murdered Lua master comes to Hawaii Five-0 for help. Steve decides to have a private investigator keep tabs on his mother.
Neal and Peter try to find out what Neal's father did. Meanwhile, they investigate a member of the Irish Mob.
When Neal and Peter get word that a thief is trying to get his hands on defense technology, they visit a FBI conference to catch the thief in the act.
Neal gives stock trading a try when he goes undercover on Wall Street.
Peter and Neal have to deal with political fixer who was hired to ruin the trial against a criminal Peter arrested.
The team takes on a hockey team owner that will stop at nothing--including injuring his own players--to get what he wants.
When Bart sees a commercial for the ultimate cruise, he begs his parents for a family vacation. Low on cash, the only way they can go is if each family member sells one valuable. Once they're away, Bart is determined to make the vacation last forever. So he comes up with a plan to make sure they never have to return home.moreless
When the daughter of one of Detective Amaro's friends is found working as an underage prostitute, the unit sets up a sting operation. Unfortunately, the operation's high-profile collar marks the return of Bayard Ellis and his notion of rape excused by mental defect.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
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
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
A crime scene photographer's unusual behavior causes Abby and Lina to investigate the unusual way the model died, while investigating the case unpleasant memories haunt Abby and causes her to remember some stories aher father told about the unpleasant and things he saw.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
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