when does alison come back into pretty little liars

Military doctor Donna Healy dies suddenly and gets reborn in the wartime era as a general's daughter. Honoring her engagement, she marries Commander Stevie Garrison, only to get abandoned on their wedding night for his mistress, the cunning Gloria Carpenter. Having seen life and death in her previous life, Donna just laughs coldly at this joke of a marriage. A scumbag and his manipulative mistress? Perfect match! Saves her the headache of dealing with them. She never wanted this arranged marriage anyway, and now that the masks are off, she's finally free. Whoever wants this miserable life can have it—she's out!

The revelation of the children switching saw Ann Stone's fall from grace; she went from being revered to reviled. Her own kin turned on her, transforming into adversaries, and her betrothed added to her wounds with his treachery and public scorn. Yearning to flee the chaos, Ann found her path blocked by the genuine affection of the Crofts, leaving her in a dire dilemma. She believed she had reached the peak of drama in her life, but the twist was yet to come—she learned that the man she played with was no ordinary person but a heir of the capital's most powerful clan. "Ah! Someone, please help me!"

Out of desperation, Queenie Xavier sells her first night to Yarden Lewis, the man she's secretly loved for eight years. Yarden enjoys the thrill but keeps her as a secret lover, never imagining it could last. She feels the same. When the time comes, she walks away.Only then does Yarden realize he's been in love with her to the very core all along.

While delivering food, Sara Scott accidentally collided with Toby Luke, the son of the richest man in the city. Desperate to raise money for her boyfriend's research fees,Sara,feeling guilty, sold her electric bike, worth over a thousand dollars, to Toby for five thousand. This led Toby to mistakenly think she was a gold-digger. The two, who had no prior connection, became entangled due to Toby's father's will, which stipulated that he must marry the daughter of his first love to inherit the vast fortune, and that daughter turned out to be Sara. In order to secure the inheritance, Toby schemed to separate Sara from her scum boyfriend and tried to make her fall in love with him. However, in the process of his carefully laid plans, he found himself falling for Sara first.

Mia's world turned upside down when her first love, Logan Henry, re-entered her life with his young daughter, Jade Henry. As Jade became a constant presence in the family, Mia's relationship with her own daughter, Molly Justin, grew increasingly strained. Feeling overshadowed and repeatedly pushed aside, Molly slowly closed off her heart until one day, she left with her father, Mason Justin. Only after their departure did Mia awaken to the pain she'd caused. The weight of her indifference and the void left by her daughter's love began to consume her, plunging her into a spiral of irreparable remorse.

After Johnny married the stunning and accomplished Valerie, his greedy family—convinced he'd landed a wealthy older sugar mama—never bothered to meet her. While Johnny was away, they mistook Valerie for his mistress and, desperate to keep their imagined "rich old bride's" fortune, cruelly turned on her. Little did they know: Valerie was actually the young, brilliant CEO of a major company, temporarily stepping back to focus on starting a family. When the truth came out, their shame was matched only by her fury—and they were swiftly shown the door.

Heart surgeon Mervin Charles dies suddenly and is reborn as a 7-year-old homeless boy who then names himself Merlin Charles. He's rescued at a shopping mall by his former colleague Camille Reynolds,and he discovers her phone wallpaper is actually his photo. News reports reveal that Mervin has become a vegetative patient. To get closer to his original body, Merlin lies about being an orphan and gets adopted by Camille. Through various medical incidents together,both their perspectives gradually change. Mervin finally understands that being a doctor isn't about self-salvation, but about healing and saving others. In the end, he not only returns to his original body but also successfully wins Camille's heart.

Born into a rural family that favored sons, Diane Quinlan fell in love at 18 with educated youth Ethan Lister and followed him to the city with their daughter. His family despised her background and made her life miserable, even falsely accusing her daughter of theft. Finally breaking free with her daughter, Diane meets Nelson Zeller, a disabled veteran. When the Lister family continues harassing them, Nelson steps up to protect them both. With his support, Diane educates herself, leverages her tailoring talents, and establishes a clothing factory. Under her devoted care, Nelson’s legs gradually recover. From abandoned wife to independent factory owner, Diane rewrites her destiny, finding love and partnership with Nelson along the way.

Struggling with poverty, the hermit Mr. Quentin can no longer raise his disciple Candy, and entrusts her to York Smith, the owner of Ebony House.But fate takes an unexpected turn. Candy solves the epic "Dragon Game" that had remained unsolved for twenty years.After York takes Candy in, the Go King, Simon Yale, suddenly comes to challenge them. Calm and fearless, Candy counters every move, making Simon beg to become her disciple.As peace returns, York opens his heart to Candy, speaking of his secret desire to join the Go Championship and seek the truth of his wife's death. Thus begins their legendary adventure.

Katy Penny wedded into the Dursley Family, enduring three years of relentless oppression and humiliation from her mother-in-law. Ruby Lean, her mother-in-law, compelled her to care for her husband's distant, pregnant cousin, who was, in fact, his mistress. Meanwhile, on the other front, Katy's three long-lost brothers had recently discovered her location. Mr. Kent, the third son of the Kohls, embarked on a journey to Aden to retrieve Katy and bring her back home.

Cece Renner, a celestial child sent to earth to accumulate merit, is aided by four immortal masters. She helps the Jawson family find their lost child, cures Bella Sharp's illness, and resolves the Camerons' family crisis. Her rival, the Child Hellebore—also sent from heaven—competes for the chance at immortality by harming innocent people. When his true nature is exposed, he's taken back to the heavens while Cece remains on earth to continue blessing others.

When the Lynch family finally finds Fred after twenty years apart, they expect a meek puppet they can control. They don't realize he's come back from hell as a man bent on revenge. His adopted brother sees him as a rival, his sisters sneer at him as beneath them, and his parents try to chain him with guilt. He only smiles coldly and lays his plans in secret. "I'll reclaim everything bit by bit, beginning with your valued business empire."

Leon sacrificed his own career to be a stay-at-home husband for five years, supporting Janice's professional ambitions. However, his silent dedication was met with nothing but cold indifference. After a terminal cancer diagnosis, he left her the divorce papers and disappeared. Janice was initially unmoved, but the growing void in her life and the revelation of all he had done for her—followed by the false news of his death—plunged her into desperate regret, sparking a frantic search. Unknown to her, Leon had been saved and nursed back to health by his doctor, Lydia. As he healed emotionally with her support, their relationship deepened into love. When a remorseful Janice found him and begged for another chance, he firmly rejected her. Instead, he and Lydia, who had cherished him for a decade, committed to marriage. At their wedding, Janice confronted the full reality of her loss, while Leon and Lydia embarked on their new life together.

Orphan Sierra Lowell is suddenly found by her divorced parents who were "dead for over a decade." To investigate the truth behind her childhood abduction, she goes undercover and follows her mother into the wealthy Reid family mansion. As her disguises fall away, the Reid family members who once looked down on her gradually become her loyal followers. Meanwhile, she finds true love with Philip Harper, one of the city's most powerful elites.

Faye discovers that her fiancé is having an affair with the wife of secret billionaire Arvin Sterling, so she takes revenge on him by getting intimate with Arvin. However, it turns out to be Arvin’s scheme to lure Faye in his seduction game......

Shirley Stone, the clandestine girlfriend of wealthy heir Felix Goodwin, faces heartbreak when Felix abruptly proposes to Sara Lane. Feeling used and unloved, Shirley decides to move on. However, Felix, realizing his mistake and the depth of his feelings for Shirley, sets out to win her back. As they navigate their tumultuous relationship, Shirley is torn between the past and a possible future with Felix...

Rayna risked her life to be pregnant for her husband Kyle, yet was betrayed by him before her sickbed. Her life was in danger due to Chelsea, Kyle's lover, who wrongly applied anesthetics. Then Kyle gave up saving Rayna's life and shirked responsibility. But Rayna's first love Jeffrey came to save her and revealed Kyle's true color who was later banned in the medical field. After recovery, Rayna married Jeffrey.

In the previous life, Jonathan Shane gave his all for his family. However, he was framed by his adopted brother Jacob, put in jail, abandoned by his family, and died with regrets in the end. This time, he refused to take the blame for Jacob and revealed the truth of the hit-and-run, but his mom and sisters still took Jacob's side. So, Jonathan chose to cut ties with his family and decided to take back what had been stolen from him.