who is a and why in pretty little liars

A year ago, to cover her father's medical bills, Sara Wilson switched identities with her twin sister. She took her sister's place in a business marriage and entered the Gavin family. Over the year, she was extremely cautious, pleasing her husband and managing their home, without letting anyone suspect her true identity. A year later, her twin sister reappeared and demanded to switch back.Heartbroken, Sara had to step aside as her sister effortlessly took over her life. But her once indifferent husband was frustrated to find out his wife had been replaced.

Six years after her newborn was stolen, single mother Kelly Meadows discovers her daughter is living in the lavish home of influencer and mayor’s wife Jennifer Shaw. But when Kelly confronts her, Jennifer locks her inside the mansion, livestreams fabricated “evidence” to millions, and frames her as a dangerous intruder. Kelly must fight to protect her son, rescue her stolen daughter, and escape a woman willing to destroy anyone who threatens her perfect life.

Carol, a part-time food delivery worker who lost her mother, coincidentally helped the grandfather of Denton's wealthiest man. Later, this elderly gentleman tried to fix his grandson Nigel up with Carol. In order to repay the debts left behind from her mother's medical treatment, Carol agreed to marry Nigel for the sum of $200,000. Nigel, pressured by his grandfather, entered into the marriage reluctantly and hid his identity from Carol. However, their feelings for each other gradually grew as they started living together. Yet, Nigel's concealed identity remained a ticking time bomb in their relationship. Events such as Nigel's mother visiting their home and the party hosted by Nigel's group further fueled Carol's suspicions about Nigel's true identity, leading to a series of tense yet comical situations.

Adrian Lee wakes up in a famine-stricken ancient era, and suddenly finds himself the father of five daughters—who wish him dead thanks to the scoundrel whose body he now inhabits. Just as all hope seems lost, he unlocks a divine system. By earning "affection points" from the girls, he trades for supplies and manages to build a cozy life for the family amid the chaos. But peace never lasts.One day, the girls' mothers showed up—each with a background powerful enough to shake the empire.

Master weaponsmith Wilma Kirby transmigrates into a lovestruck fool in ancient times. Told to marry by twenty or face prison, she sets her sights on the shy, handsome Seth Zeller. When 100,000 troops threaten the Zellers, she forges unstoppable weapons, helps him crush their enemies, and wins both love and family—proving she can handle war, romance, and everything in between.

When I realize that I've gotten reborn as a snake that's soaked in poisonous wine, I accidentally awaken a system amid my despair.With the power of devour, I gain my strength and power continuously until I get to escape the wine jar in the end.When I'm faced with the threat of getting hunted down by human beings and mutated creatures, I hide my tracks while growing even more powerful at the same time. Slowly, I evolve from a weak venomous snake into a formidable mutated beast. Later on, I get rescued by Faye Kirk, a kind-hearted human, and her family.During my time with them, I learn how to trust and protect the people around me.As the spiritual energy in this world gets awakened, natural disasters keep erupting all over the world.That's when I realize that only with constant evolution can I protect myself as well as my loved ones in this apocalyptic era.Hence, I step on a journey that allows me to explore the unknown and break my own limits.

Dawn, the nation's brightest star, hires a bodyguard—Nate Jagger. Cold,dangerous,and sharp-tongued, he hides a shocking truth: he's the missing heir of a powerful family,gone for five years. In a game of secrets, he thinks he's the hunter—until he realizes he's been living in her dreams all along.Nate, I've dreamed of you… every time.Then let me stay a little longer… before you see who I really am.

Rudy Shane discovered her husband Buck Kent's infidelity and betrayal. He had two mistresses and had drained the Shane family's wealth into foreign accounts.Worse still, Buck had orchestrated her father's death.Realizing Buck had harbored sinister intentions since their first meeting, Rudy embarked on a mission for revenge. She turned the mistresses against him, leaving him isolated and vulnerable, and ultimately orchestrated his downfall, bringing him to justice for his treachery.

Yara's husband had an affair. Before getting divorced, she wanted to take revenge. A strange but powerful CEO happened to call her to meet him in a hotel. She agreed, but only to find that she should not have gotten involved with this man. Originally thinking it was just a fleeting indulgence, she didn't expect that the man would cling to her instead, forcing her to indulge night after night...

Carl, chief research supervisor at Ark Base, was exiled for developing a zombie cure against Kevin's orders. Now surviving with his eight-year-old daughter Nancy, tragedy strikes when she's bitten protecting him during a horde attack. As his daughter turns into a zombie, Carl becomes the most unlikely father in the apocalypse—determined to protect her at all costs.

Once heir to the Ashford empire, Ethan is kidnapped and erased as a child. When he resurfaces at eighteen, freedom proves crueler than captivity—framed, imprisoned, and sacrificed by the family that reclaimed him. Surviving betrayal and near death, Ethan vanishes again, this time by choice—leaving forgiveness behind.

When the blizzard apocalypse descends on the world, my family casts me out to the blizzard just so the fake heiress, Erica Kent, can sleep in the car's backseat. But I end up awakening the three-hunk system just when I'm about to die.The first hunk is CEO Jay, a haughty yet domineering CEO who has unlimited supplies in his inventory. The second hunk is Professor Finn, who specializes in the ultimate defensive techniques thanks to his high intellect.The third hunk is Zoomer Zach, a character capable of teleporting to anywhere he wants.When the entire city is suffering from the subzero temperature, I make myself at home in a luxurious villa, where the temperature is always regulated. With the hunks by my side, I dig into a nice boiling stew while watching my shitty ex-fiancee and the rest of my family erase what's left of their humanity in exchange for a slim chance of survival by killing each other.Apparently, those scumbags still have the nerve to crawl to my fence and beg for scraps of my food! I decide to send them to hell by turning on the switch of the electrified fence around my villa.In this lifetime, I don't give a damn about relationships at all. All I care about is my own survival. With the gorgeous hunks by my side, I can rest easy in this frozen era without any worries.

Eight years ago, Anna Lane, a D-list actress, married Caleb Scott, CEO of Scott Group, to fulfill her grandfather's wish. After unexpectedly becoming pregnant, she filed for divorce. Six years later, the Scott family discovers that her daughter, Nancy, is actually Caleb's child and begins searching for them. While Anna faces mistreatment on a film set, Caleb arrives to rescue them but doesn't recognize his daughter. At a banquet, Caleb's mother reveals Nancy's identity, and the truth comes out: Anna is Caleb's ex-wife. Caleb confesses his love, and they remarry, welcoming twins and achieving both love and career success.

Natalie was once the Parson family's cherished daughter, but her world was shattered when Monica was unmasked as the true heiress. Manipulated by Monica, she was framed for their grandmother's murder and cast out by her family to a hellish reform school. Two years later, she was released, only to be forced into a marriage with a notorious alcoholic playboy. As the truth about her past and the horrors of that "school" come to light, Natalie watches everyone with a cold stare. Her storm of revenge has just begun.

In the Eldoria legal circle, newcomer Helen Jones was targeted by rumors spread by the opposing lawyer in a case. Sam Liam, who had just returned from Nexa, timely appeared to help. Helen had harbored a secret crush on Sam since high school, and her aspiration to become a lawyer was also inspired by his encouragement back then. So when Sam proposed marriage, she said yes at once. However, her step-sister, Hana Seth, found out about their marriage and, also having a secret crush on Sam, repeatedly targeted Helen. Although the issues were resolved without major trouble, Helen was deeply embroiled in a rumor scandal. Meanwhile, she was admitted to the law graduate program at the University of Nexa, so she decided to leave the law firm to pursue further studies. Sam became an adjunct professor and went with her. Cole Skyler, a law firm partner, traveled to Nexa on business and, upon learning that Helen was studying there, began to target her. But he was impressed by her resilience and eventually changed his attitude, choosing to bless them. Sam and Helen ultimately achieved a happy ending.

Dumped by her ex, Lena falls into bed with her irresistible CEO—but vanishes by morning. As the CEO searches for the mystery woman who stole his heart, Lena’s scheming ex-mother-in-law steals her identity… and takes her place as the CEO’s wife.

Despite being married for three years, Muse Dawn doesn't even get to hold hands with Jim Hawkins, let alone bear a child for him. After surviving a plane crash, Muse finds herself in the hospital, where she sees Jim accompanying another woman for a prenatal checkup. This makes Muse realize Jim's never had space in his heart for her. As soon as she ends the relationship, Muse changes back to the granddaughter of the world's wealthiest man. Since she can't be Jim's wife, she'll be his nemesis instead. She'd like to see who's the unworthy one now!

When Cora Snyder regains control of her body after three years, her once-gentle husband has grown cold,her lively son has turned into a mischievous troublemaker, and her obedient daughter has become timid. Her reputation lies in ruins. But Cora wastes no time—she trains her children, wins back her husband,fights fiercely in her career, and reclaims everything that is rightfully hers.