Allison Grant is one of the main characters in the Prime Video original series, I Know What You Did Last Summer. She is portrayed by Madison Iseman .
Allison was born on April 19th, 2003. Allison lives with her twin sister, Lennon Grant , and her father, Bruce Grant. She smokes and is the shy, less social twin sister. She has a huge crush on Dylan and flirts with him before finding out that her sister slept with him. She's devastated and furious with Lennon Grant as the two have had a rocky past as sisters and weren't the best of friends.
Throughout the Series[]
Season 1[]
She has a huge crush on Dylan and flirts with him before finding out that her sister slept with him. She's devastated and furious with Lennon Grant. They've had a rocky past as sisters and weren't the best of friends.
Allison gives Lennon her necklace telling her she might has well have "everything" and storms off. She gets in Lennon's car in her jacket and her friends jump in the car, assuming it's Lennon, not Allison. Allison drives off and hits someone with her car - her sister, Lennon. The friends are horrified and hide Lennon's body in a cave, believing it's actually the body of Allison.
Allison then tells her father everything and he encourages her to keep the secret so he doesn't lose both daughters. Allison takes on Lennon's persona, friends, and life. She tries to cover up her tracks with Lennon's, writing a fake goodbye letter from her.
One year later, Allison, (as Lennon), starts to receive messages from a mystery person who leaves a note saying "I know what you did last summer," who even leaves a hidden ram's head in her closet, dripping with what is assumed to be blood. Allison prompty gathers together Lennon's friends to warn them, going on to try and figure out who it is that knows what happened.
In episode 4, she falls in love with Margot and kisses her. They then become a couple.
In the final episode, she discovers that Margot is the killer. Margot stabs her and reveals that she has done everything to avenge Lennon's death and that Allison confess the thruth. But when Dylan arrives to help her, Lyla arrives and arrest the two teenagers. When she asks to Allison what's happening, Allison lies to Lyla saying that Dylan has attacked them. Allison protects Margot because she is never liked as Margot loves her. Margot has the possibility to kill Allison but finally redeems herself, kisses her and becomes a couple with her again. Allison promises to Margot do not never leave her.
Personality[]
Allison is not very social and is on the shier side. She is the opposite of her social butterfly twin sister, Lennon. Allison smokes and keeps to herself mostly.
Physical Appearance[]
Allison is small. She has short, wavy blonde hair.
Notes and Trivia[]
Gallery[]
Promotional[]
Episode Photos[]
