Revenge – Leo’s son shows up with his wife, but the trip does not go to plan. Cat is forced to prove her innocence whilst caught up in an investigation.
Frenchmen Can’t Jump – The shooting of a motorcycle messenger delivering heroin is investigated. Meanwhile, Leo makes a startling discovery while involved in an amateur basketball tournament.
The Longest Night – Half of Brooklyn suffers a blackout. Cat arrests a gang member, which leads to an explosive showdown after his gang shows up at the precinct demanding his release.
Double Identity – A maid from El Salvador is shot, triggering Cat and Leo’s investigation. Before long, they discover the woman is actually a former cop from Venezuela who’s in Brooklyn to avenge the deaths of her parents.
Deadline Brooklyn – A man found in a dumpster has been exposed to a bizarre weaponized toxin, leading the NYPD to go into high terror alert. Leo suspects there’s a zombie outbreak in the city, but Cat puts her focus on a terrorist plot.
Black Widow – Three men are mysteriously killed, with evidence pointing to a female murderer. Leo fits the profile of the victims and goes undercover as bait to end the woman’s deadly rampage.
Love Hurts – The wife of a notorious stalker is murdered in a case that forces Cat to face her past. She reluctantly agrees to take the lead on the investigation, but only if Leo is by her side.
Ambush – Two female prisoners are killed and four escape when a prisoner-transport van is ambushed. One of the escapees is a witness to the murder of Cat’s father. As Cat pursues the on-the-lam inmates, she comes closer to the truth about her father’s killer.
Precious Cargo – A foster mother is murdered, prompting an investigation by Cat and Leo. Before long, Cat is surprised by the bond she forms with one of the foster children. The case turns personal for Leo, who misses his own son in France. Meanwhile, Cat asks to open a case into a mafia family.
Cherchez Les Femmes – Cat and Leo investigate the beating death of Leo’s friend, a survivor of the Holocaust. Elsewhere, Cat becomes Leo’s sponsor to help him with his immigration problem.