Kathryn Love Newton, born on February 8, 1997, is an American actress who has built a remarkably diverse career spanning comedy, drama, horror, and superhero blockbusters. She first captured audience attention as a child star, playing Louise Brooks on the CBS comedy series Gary Unmarried from 2008 to 2010, a role that showcased her natural comedic timing. Newton then transitioned seamlessly into more mature and complex work, earning critical acclaim for her portrayal of the troubled Abigail Carlson on the HBO mystery drama Big Little Lies from 2017 to 2019, where she held her own alongside an ensemble cast led by Reese Witherspoon and Nicole Kidman. She further demonstrated her range with a leading role as Allie Pressman in the Netflix teen drama The Society in 2019, a series that developed a devoted cult following before its premature cancellation. Newton also took on notable recurring roles in genre television, playing the older version of Claire Novak on The CW's Supernatural from 2014 to 2018 and portraying Joanie Clark on the AMC period drama Halt and Catch Fire from 2016 to 2017.

Newton's film career has been equally impressive, beginning with a supporting role in the comedy Bad Teacher in 2011. She earned a Young Artist Award for Best Leading Young Actress in a Feature Film for her chilling performance in the horror sequel Paranormal Activity 4 in 2012. Her breakthrough in prestige cinema came with a role in the Oscar-winning Three Billboards Outside Ebbing, Missouri in 2017, and she showcased her comedic prowess in the raunchy teen comedy Blockers in 2018. In 2019, she starred in the live-action adaptation Pokémon Detective Pikachu, playing the determined Lucy Stevens alongside Ryan Reynolds's voice performance. Newton then fully embraced the horror genre, delivering a critically acclaimed dual role in the body-swap slasher Freaky in 2020, a performance that solidified her reputation as a modern scream queen. She continued this streak with the darkly comedic Lisa Frankenstein and the vampire thriller Abigail, both released in 2024, and is set to reprise her role in the upcoming sequel Ready or Not 2: Here I Come in 2026.

In 2023, Newton entered the Marvel Cinematic Universe, playing the heroic Cassie Lang in Ant-Man and the Wasp: Quantumania. Her performance brought a fresh, energetic presence to the franchise, and she is expected to continue the role in future MCU projects. She also starred in the romantic sci-fi film The Map of Tiny Perfect Things in 2021, further displaying her versatility. With a career that has evolved from child star to leading lady across multiple genres, Kathryn Newton continues to be one of the most dynamic and sought-after actresses of her generation, balancing major franchise work with independent and horror projects that showcase her fearless approach to challenging roles.