The Best Episodes Written By Melissa Rosenberg

Dexter and Arthur find themselves on a collision course, as Debra unearths a shocking long-hidden truth, Rita admits her marriage to Dexter is troubled, and Batista and LaGuerta face the consequences of an ethics breach.

Dexter figures out who the Ice Truck Killer is, along with a dark secret from his troubled past. Meanwhile, La Guerta is replaced with a new boss and Angel figures out a way how to track the killer while he's still in hospital.

Dexter realizes it won't be easy to end things completely with Lila. Dexter tries to stay ahead of the investigations as the manhunt for the Bay Harbor Butcher intensifies. An enemy of Dexter figures out his secret.

Dexter gets some much-needed R&R time with Rita and the kids out of town, leading to his stalking of a new victim until he unexpectedly begins to empathize with his target, a cop that murdered her family.

Lila Tournay finds Sgt. James Doakes imprisoned in an Everglades cabin and learns from him that her object of affection, Dexter Morgan, is the serial killer known as the "Bay Harbor Butcher". She decides to help Dexter and kills Doakes by setting the cabin on fire. Meanwhile, Dexter's sister Debra questions whether her career is more important than her relationship with FBI Special Agent Frank Lundy.

Miguel and Dexter's friendship is impacted when Rita confronts Miguel about his alleged infidelity. Believing Skinner has abducted Anton, Debra pulls out all the stops to find him

Dexter has always known his father’s Code was meant to protect him from exposure. But after committing a serious mistake, he wonders if it could have been designed to protect him from something even more dangerous – human emotion. When he discovers that Trinity is planning an out-of-town trip, Dexter sees an opportunity to ride along and gain insight into the mind of a fellow monster.

Dexter sets his sights on a new victim: a murderer so repulsive it seems only fitting that he's a used-car salesman. Dexter's been unable to lie to Rita about his midnight activities, which has her thinking that he's a drug addict. She's threatened to leave him if he doesn't commit to a 12-step program to deal with his supposed addiction. While in this recovery, though, Dexter meets a sexy, mysterious woman named Lila.

Larry's son flies in from Detroit and goes to Cage & Fish looking for Ally. He wants to sue his parents for emotional damage. Ally and Sam bond, and Larry has to take him back to Detroit. He doesn't want to say goodbye to Ally, who suffers with his departure. Larry promises to return. Meanwhile, Nelle is representing her dance instructor/lover Sam Adams in court. He's suing his ex-partner for stealing his dance moves. Cindy McCauliff returns to the office looking for Richard. (S)He wants to marry a man, but after the court denies it Richard offers to perform the ceremony at the office.

The homicide division is handed an unbelievable lead when the Ice Truck Killer's latest victim is found alive but mutilated; Dexter is on the trail of a person who traffics in humans.

While on a weekend getaway with Rita, his sister and her new beau, Dexter learns that his biological father, thought to be dead for 30 years, has just passed away, and that he's willed his son everything he owned.

Jessica and Luke get help from someone else in the neighborhood. Kilgrave gears up for a major test of powers against Jessica.

Debra and the homicide unit, Dexter and ADA Miguel Prado are all searching for the same serial killer, who is responsible for the death of Prado's younger brother. Meanwhile at home, Dexter is faced with a decision to make concerning Rita and her kid

Ryan takes a job at the Crab Shack diner. A co-worker at the diner might mean bad news for the Newport kids. Ryan asks Marissa out on a date. Sandy attempts to help Jimmy sort out his life, and gives him some bad news. Julie reveals a long-held secret to Kirsten. Disaster strikes at another one of Holly's parties.

Everyone is back home in Newport, and Marissa is recovering. Julie points her finger at Ryan and forbids him from seeing Marissa, who does not appreciate the help. Sandy starts his new job, but finds himself surprised by the case work. Kirsten finds herself surprised by Sandy's new co-worker. Ryan enrolls at his new school, with conditions. Julie gets an intervention, and Jimmy gets a new roommate.

Jessica Jones is hired to find a pretty NYU student who's vanished, but it turns out to be more than a simple missing persons case.

An old friend visits Jessica as she sets out on an agonizing mission and learns the true cost of being a hero.

Hailey discovers she isn't as welcome as she might have thought. Perhaps the Cohen house is full? Luke makes some new friends, while Seth and Anna try to tell a friend about their decision. Rooney sings, a lot, and Oliver noses, a lot. Trouble brews.

As Jessica focuses on helping the helpless, Dorothy Walker shows up at Alias to beg for help finding a missing Trish.

Waking up in unfamiliar surroundings, Jessica once again finds herself torn between two worlds and facing an impossible choice.

While Jessica deals with a rival PI and a paranoid would-be client, Trish digs up a medical file that could unlock the mystery of Jessica's powers.

Let the punishment fit the crime: an ambitious inventor, Dr. Jack Henson, creates a "" virtual prison"" and wants the government to adopt it nation-wide. Using his invention, convicts serve a life sentence in just a few hours. Henson claims the harsh sentences will ensure that criminals never offend again while the short time required cuts prison costs. He seems to be making his point until they connect an innocent man to the apparatus and the demonstration goes sour. To save the young man's life, Henson must submit to his own invention -- and to a lesson in the true meaning of justice.

Barbara and Helena learn the truth about Dinah and Dinah learns the truth about her own past when her mother, Carolyn Lance, comes to New Gotham in search of the daughter she abandoned years before. Dinah is shocked to learn that Carolyn was once Batman's protege, Black Canary. Meanwhile, Helena learns that Detective Reese has family issues of his own when he becomes secretive about a ruthless gangster.

When a hit is put out on the life of legendary mob boss, Al Hawke, the only person he trusts to protect him is his son, Detective Reese. Reese turns to Helena for help, but when she learns that Reese's father is the same man who killed Dinah's mother, Black Canary, her loyalties are tested.

Harley Quinn acquires the power to hypnotize others with her eyes, and persuades Helena to reveal the secrets of the Clocktower, along with Barbara's and Dinah's true identities. She soon has all the ammunition she needs to wreak havoc on The Birds as well as the rest of New Gotham.