what episode of pretty little liars does alison come back

Sierra Lowe, a genius from the future research institute, dies unexpectedly and wakes up 100 years in the past as the fiancée of Commander Ethan Nacht. Her plan is simple: lay low, earn money, and avoid trouble. And when the ninth wife finally rises to power, she’ll happily step aside. But on their wedding day, Commander Ethan hears her inner thoughts loud and clear: “So this is Ethan Nacht, the guy who secretly slept with the ninth wife?”Ethan was baffled: "Father only had eight wives. Where did the ninth come from?"

Tina rescued Zion, a mute slave in the fighting pits, under a mysterious identity while in Cloudon. She believed their love was a predestined redemption until Zion was exposed as the illegitimate son of the Stone family. Only then did she realize his approach had also been a transaction. Tina tried to cut ties, only to be dragged into the Stone family's internal strife. After seizing power, Zion drugged her to erase her memories of their past together and her former alter ego, sending her back to Jadeport to live as an ordinary woman. Now, he schemes to win her back with a whirlwind marriage, but as Tina's memories gradually return, the truth of their past begins to surface.

Five years ago, he was imprisoned out of a false accusation. Five years later, he returned in glory and controlled all the power. Finally, he would get back everything he had lost!

Five years ago, Ella Cain ended up spending a night with Liam West after being set up by someone, resulting in the birth of her son, Oliver Cain. Fast forward five years, Ella's grandfather insists she get married to inherit the family business. Reluctantly, Ella agrees. In an unexpected twist of fate, she crosses paths with Liam once again. After navigating various challenges, Liam falls in love with Ella and discovers that Oliver is his son, a fact he had not acknowledged due to family matters. Ultimately, with Oliver's help, they clear up their misunderstandings and come together in the end.

As the only daughter of the Merrick family, Kirsty Merrick bears the responsibility of marrying into the prestigious Bartley family to lead the Merrick family to new heights, as carefully orchestrated by her mother Evanna Taylor. Kirsty successfully secures a betrothal with Morgan Bartley, the playboy son of the Bartley family's second heir. Unknown to Kirsty, Morgan has been secretly involved with Jess Merrick, Kirsty's only friend who grew up with her in an orphanage. Years later, when brought back to the Merrick family, the kindhearted Kirsty could not bear to abandon Jess, and thus pleaded with her parents to take Jess in as well. Now, Jess has begun an affair with Kirsty's fiance Morgan. To get back at Morgan, Kirsty designs a plan to seduce and intoxicate Nicolai Bartley, the young CEO of the Bartley Group, leading to the start of a dangerous "underground affair."

Alice Cooper, leader of the Cooper family, comes back after seven years to uncover the truth behind her mother's death. While seeking revenge, she catches the eye of the powerful Nova CEO, who later falls for her.

Leroy Miller is the most gifted assassin ever produced by the Valley of Villains.Before his graduation, his mentor Veronica presents him with five beautiful women as a reward. The women are enchanting and seductive, but each conceals deadly intentions—they plan to strike Leroy down the moment he lets his guard down. Little do they know, Leroy has perfected the assassin’s creed of absolute ruthlessness. When Leroy finally descends from the mountains, he encounters masked assassins from the Black Dragon Sect pursuing Cleo Turner, a poisoned young woman who desperately grabs his arm for help. Leroy coldly glances at her and pushes her away, turning to leave. The assassins grow arrogant, shouting at him to get lost. But then Leroy’s gaze cuts through them like a blade, and his killing intent instantly envelops the entire scene...

For six years of marriage, Winona Smith was kept in the dark—until she discovered her husband,Yale Gunson, was sheltering his lover abroad. Her heart shattered the moment he failed to show up while their daughter lay critically ill. Devastated but resolute, she ended the marriage. Picking up her career where she left off, Winona transformed from a homemaker into a luminary in scientific research—her papers graced top international journals, her breakthroughs earned global accolades. Just as she prepared to embrace a new life filled with happiness, the once-indifferent Yale completely broke down. Desperate and unhinged, he fell to his knees, begging her to come back.

Karissa was the true heiress of the Beltran family, who had been lost and later found. However, she was then kidnapped by Ivy, the family's adopted daughter. In a bid to prove who their family truly cared about, Ivy set fire to the warehouse they were in. In her moment of peril, Karissa found that her parents and brothers chose to save Ivy, abandoning her to her fate. Just when her life hung in the balance, she saw Luis, someone she had once lived with, come to her rescue. When she opened her eyes again, she found herself reborn three years earlier. This time, Karissa was determined to change the course of her life.

Just back from abroad, Thalia Prince receives a marriage certificate from her mother—tying her to a man rumored to have a terrible reputation. Determined to secure a quick divorce, she impulsively spends the night with a supposed escort, only to discover that he is actually her husband…

Med student Miles catches his influencer girlfriend cheating. To get back at her, he stages a “fake affair” — only to accidentally kiss the handsome CEO, Hunter. He swore he didn’t like men… and Miles thought he was straight too. But one kiss changed everything......

Banished in her early years, she's reluctantly brought back home to stand in for her sister in an arranged marriage. At first, she and her disabled husband can't stand each other, but as they spend more time together, a bond forms, sparking an unexpected romance. Together, they embark on a journey of revenge.

Three years ago, Sherry, the daughter of the richest man, was saved by Kyle. To repay him, she concealed her identity and secretly helped Kyle. However, his family repaid her kindness with ingratitude. Three years later, she finally realized he was not worth it and went back to being the rich daughter!

He is Hades, master of Hades's Hall, the organization that ruled over the world. He had the millions of people worshipping the ground he walked! When he learned that his wife was being humiliated, he marched back to his home country while burning with fury. Those who stepped on his tail must die!

When Yvonne Carter was a child, she was a chubby girl who had a crush on the class nerd, Derek Lawson. As she grew up, her parents tricked her into going abroad and marrying a stranger. To get close to Derek, Yvonne applied for a job as his assistant. However, she accidentally inhaled an aphrodisiac and ended up spending the night with him. When Derek woke up, the beautiful "Cinderella" was nowhere to be seen. The only person in sight was the timid, plainly-dressed Yvonne, who had come to deliver documents. Derek mistakenly thought she had witnessed the previous night's events and ordered her to locate that woman. Eventually, he discovered that his "wife" was actually Yvonne, but by then, she had left in disappointment. He chased after her to the airport, where he confessed his deep love for her, and they embraced and kissed.

Customs officer Wynne Sutton died in the line of duty, only to wake up in the body of a character from a novel. She was now the wife of the hero, Lance Shelton. In this new world, she weighed 200 pounds and was mocked by everyone as Madma Pig. She also had a five-year-old son, Henry, who was considered slow-witted. Armed with a weight-loss system, Wynne was determined to turn her life around—and soon discovered that Henry possessed the power of prophecy: his words could come true, he could see people's nationalities, and he could hear their thoughts. When Henry said, "Aunt Lane has 'I am Gapanese' written on her head," Wynne became alert. Riding her motorcycle, she crashed a banquet and confronted Lance, who dared not acknowledge her. Thus began the dramatic tale of her spectacular rise.

Yu-Jin was murdered by her husband Chan-Yeong and his mistress Na Ju-Hui. Shortly after, her sister Yu-Ri is also killed and finds herself back in time before Yujin and Chan-Yeong's wedding. Determined to take revenge for her sister, Yu-Ri decides to marry Chan-Yeong. Just then, her first love Tae-O reappears before her.

Top-secret agent Julie Bell died on a mission, only to wake up in an ancient world as a notorious gambler who abused her family and sold her daughters. To survive, she battles debt collectors, hunts a tiger for gold, and fights to win back her family's trust. In the end, she finally manages to lead her family toward a brighter future.