who is a and why in pretty little liars

On the engagement day, Jaydin Collier called off the ceremony to celebrate the birthday of his "female friend". Vivian Buck, who had loved Jaydin for seven years, was heartbroken. She left resolutely. Jaydin thought she was just throwing a tantrum. But when he learned she'd legally married someone else, the always-arrogant Jaydin lost his cool. Vivian was born with a jinx-like curse ability, forbidden from using it on those she loved and has fallen in love with. While chasing Jaydin, the power lay dormant, but returned after their breakup. Now, her words were deadly.

Within the halls of Golden Feather Academy, wealthy stepsiblings Tanya and Leo, bound by family but not blood, hold court as the institution's dual reigning icons of popularity. As the holiday break ends, the queenly Tanya sets her sights on the newly elected Student Council President, Logic—son of the nation's president. At the grand ball, her calculated allure meets only his icy dismissal. Stung and pride inflamed, she makes a reckless wager with her notorious playboy stepbrother, Leo, who has just slipped into her bedchamber under cover of night: if Leo can seduce and shatter the seemingly incorruptible, iron-willed heterosexual scholar Logic within one month—turning his arrogance to ashes and his reputation to ruin—she will grant him the one thing he's craved for years: a night in her bed. The libertine Leo, who believes his charm can conquer anyone except the elusive Tanya, acknowledges the formidable challenge of making Logic fall in love. Yet, brimming with audacious confidence, he accepts, plunging them all into a twisted game of seduction and vengeance. However, as the month draws to a close, a chilling realization dawns on Tanya: not only has she been denied the sweet venom of revenge against Logic, but she may have irrevocably lost the mercurial, ever-devoted Leo—the brother whose affections she'd always held in a delicate, dangerous dance of veiled dominance—to the very heart he was supposed to destroy.

Harrison Chambers signed a gratitude contract with Kira Sue's mother, giving up his dream of developing of northwest to marry into the Sue family. For five years, he took care of Kira with great devotion. However, after a tragic fire, Harrison realizes that his efforts could not win her heart. She still harbors feelings for her first love, Zane Lee, who is about to return from abroad. Deciding to leave, Harrison heads to the northwest. Only after his departure does Kira realize her true feelings, but it is already too late.

At five, Nina donated bone marrow to Quinn, saving her life. Tragically, Nina's parents died in a car accident, and she was rescued by a disabled scavenger, becoming Annie. Excelling in school, she interned at a major company, where she faced jealousy and bullying from fellow intern Angela. Unbeknownst to them, Angela was the adopted sister of CEO Quinn, who had long sought to repay the family that saved his life. When Quinn learned the truth—that the girl he'd favored was not the real Nina, but her bully—his world turned upside down.

In her past life, Christie Reynolds made a fateful mistake in love, falling victim to a misjudgment of character that led to a tragic betrayal. Burned to death as a result, she gets a second chance at life through rebirth. Determined to right the wrongs of her past, she vows to marry the man who had courageously rushed into the fire to save her, even if he was known as a notorious playboy. Initially, she marries him out of deep gratitude, but after the wedding, she finds herself showered with an unprecedented level of affection. It seems she is going to be utterly and completely indulged!

When Quinn Sanders was just three years old, she was taken in by the Clark family to be raised alongside their son, Bobby, with the intention of them marrying in the future. Over the years, she faced mistreatment, until a chance reunion with her birth mother, Morgan Sanders,who had spent two decades searching for her.Bobby's proposal turned out to be a scheme for financial gain,but at the wedding, Morgan recognized Quinn, uncovering the truth behind her past. The people responsible were held accountable, and mother and daughter slowly began to rebuild their bond through fragmented memories.

Over the past few years, Xena had been working hard to earn money, allowing her son, Leon Cale, to attend college. Leon promised to take his mother to the city to live once he got into college. Ten years later, Leon achieved great success and forgot about his mother who lived in the village, forgetting about his own humble beginnings. This play carries a profound positive energy, showcasing the greatness and selflessness of a mother's love. It also serves as a reminder to the audience to never forget gratitude and to cherish the silent sacrifices of their mothers.

Hugh sacrificed his chance at the National Medical Research Council to save his wife Quinn, who had late-stage liver cancer. He sold family heirlooms to fund her treatment, but Quinn used the money to buy a car for her first love, James. She became obsessed with their past together, ignoring her son Luke's feelings. Hugh and Luke gave her three chances to change, but she refused. Finally, Hugh joined the National Physician Program and left with Luke. After he departed, Quinn regretted her actions, but it was too late to make amends.

Six years ago, singer Emma Hadley developed a kidney disease after childbirth, was abandoned by her boyfriend Tyler, and was told that her daughter had died. In reality, Tyler saved her by donating his kidney, but because he borrowed money for the surgery from Michael, a popular singer who had a crush on Emma, he was forced to leave with their daughter. Six years later,Emma became a renowned superstar in the music industry, still haunted by thoughts of her daughter. Her daughter Lily, singing on the street to raise money for her father Tyler's surgery,accidentally encountered Emma...

Nina and Adam are both trying to flee from an arranged marriage tailor-made for them, but by the hand of fate, they end up meeting each other unprompted and making the spur-of-the-moment decision to get hitched. Adam, secretly a billionaire, goes all out to spoil Nina, leading to funny and sweet surprises on a daily basis as he tries to keep his uber-rich true identity under wraps. Adam doesn’t just pamper Nina; he stands up for her against her greedy stepmother and stepsister, and anyone else who’s hurt her, while helping her achieve career dreams in the happy-ever-after.

Mabel Bullock never asked for immortality. When she accidentally bonded with the "System," she thought it was a blessing. She loved Nicholas Parrish enough to die for him. But to him, her "gift" made her deaths meaningless. When his first lover, Dana Scott, gets targeted by killers, Nicholas coldly orders Mabel to take her place.Mabel agrees, but what he doesn't know is that this is her last chance at survival.By the time Nicholas sees her lifeless body stay dead, the man who stopped counting her sacrifices is forced to face a truth even immortality couldn't fix:Some regrets outlast forever.

Joanna, daughter to Europe's wealthiest family, chose love over her status and wed David Kerr. She became his behind-the-scenes supporter, using her resources to establish a fashion company for him. At a social gathering, she fell victim to a deceitful drink orchestrated by Vivian, David's childhood friend, narrowly avoiding a compromising situation. In her dire moment, a stranger came to her rescue. Upon regaining consciousness, Joanna was startled to find the infamous "Black Wolf," Ryan Cabell, was the man who had saved her. Assertively, Ryan offered to fulfill all Joanna's desires if she agreed to be his girl.

Four people tangled by fate enter a deadly game of "method" — with one rule: get caught, you die. To find love. To protect it. To use it. To steal it. Three of them are thrown back in time to different moments in their past, turning love and betrayal into a high-stakes cat-and-mouse. Each return resets the board, each performance blurs truth and acting, and the villain who once drove them to their deaths becomes the counterweight in a rigged match. After being betrayed by the man she sacrificed everything to make a star and dying for it, one woman rewinds the clock to take him down, no matter the cost.

Harold and daughter Demi are critically injured in a riot,with Demi fighting for her life. When the hospital faces a Type A blood shortage, his wife Violet signs away the life-saving blood to save Jack, son of her first love Nate, who claims the boy has leukemia. She abandons her dying daughter without hesitation.Heartbroken after six years of devotion, Harold resumes his hidden identity as heir to the powerful Summit Group. He saves Demi and disappears. Finding Harold's abandoned phone filled with loving messages and final farewell, crushing regret overwhelms Violet.

A dance of fate defies the centuries, weaving a love that even death could not erase. In the halls of a forgotten era, Harrella, the dazzling courtesan, loved with a passion that burned brighter than the stars—until betrayal shattered her heart. Reborn into a fragile modern life, she finds herself a servant in the opulent Hawley household, her survival hinging on a costly surgery. But destiny has not forgotten her. Sherard Hawley, the icy heir who shuns love, stands in her path—a ghost from her past, a flame she cannot resist. Will history repeat itself, or will this time, their souls finally dance to the same rhythm?

The spirit of Lucille Payne, an ancient general, transmigrated into her descendant who bore the same name—only to discover that the Payne family had fallen into decline. Her sister-in-law had been secretly transferring away the family's assets, while her own brother and sister remained blindly obsessed with romance. Refusing to accept this decay, Lucille took action: she thwarted her sister-in-law's schemes, encouraged her brother to enlist in the military, and helped her sister regain confidence through a dance livestreaming career. In the end, she succeeded in restoring the Payne family to its former glory.

Elise Pierre, a university student, has just stepped into the society when she accidentally spends a night with Louis Denton, a CEO who is known to be allergic towards women. A month later, at a career fair, their paths cross again in an unexpected twist of fate. While Louis initially assumes Elise is a gold digger, he arrives just in time to rescue her from being married off to an older man for a bride price of $100,000. When Elise opens her eyes again, she finds herself in Louis's luxurious home, where she begins to be enveloped in his love and affection.

Natalia Smith, a powerful businesswoman, had a very spoiled Molly Smith who kept causing trouble. One day, however, she learned Molly wasn't her real sister! Turned out someone switched Molly and Yolanda, Natalia's real sister, after they were born. In the past 18 years, Molly had lived a luxury life like a princess while Yolanda was abused by her foster parents all the time. Now, the truth revealed and Yolanda was back. Would the evil Molly just give up and leave? How would Natalia react to Yolanda's return?