The Best Episodes Written By Melissa Rosenberg

Dexter and Arthur are on a collision course.

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.

Rita goes to a wedding with the kids, allowing Dexter to have his own little vacation. He does what he does best when alone, hunt, and goes after an officer with a dark secret.

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.

Special Agent Lundy and the FBI finally settle the case of the Bay Harbor Butcher, but the heat's not entirely off Dexter as the flames literally close in.

Dexter is happy to have someone to help him with his killings, but can his new accomplice really keep to the Code of Harry or will he become the very thing Dexter seeks to destroy? Rita revolves to confront Miguel about his suspected infidelity. Debra searches furiously for Anton when it's revealed that he was abducted by the Skinner.

Dexter wonders if his father's Code is truly the right path, and hopes to get answers by accompanying Trinity on an out-of-town road trip to Tampa; Debra discovers that her single-minded pursuit of Trinity has blinded her to the true identity of her assailant.

Dexter's inability to deceive has him pursuing a slick liar as his next victim, while Rita believes he's concealing a drug problem and forces him into a 12-step program where he meets Lila, a seductive new woman.

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 buzzing after The Ice Truck Killer's latest victim is found mutilated, while Dexter stalks a murderous human trafficker.

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.

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.

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

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

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

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.