Netflix’s There’s Someone Inside Your House cast features Sydney Park, Théodore Pellerin and Asjha Cooper. This info article contains spoilers and character details for Patrick Brice’s 2021 movie. Check out Vague Visages’ Know the Cast section for more cast guides.

Based on Stephanie Perkins’ 2017 novel, There’s Someone Inside Your House takes place in Sloane County, Nebraska. New student Makani Young bonds with her classmates as a killer terrorizes the community. Meanwhile, various male suspects emerge while the female protagonist hides a dark secret about her past. Here’s every main performer and character in There’s Someone Inside Your House.

Read More at VV — Know the Cast: ‘The Man from Toronto’

There’s Someone Inside Your House Cast: Sydney Park as Makani Young

Character Profile: A transfer student at Osborne High School. She protects a secret about a near-tragedy involving a former classmate. Makani pursues her academic/poetry goals while developing a romance with an enigmatic peer named Ollie.

Park’s Resume: Gabby Phillips in Instant Mom (2013-15), Cyndie in The Walking Dead (2016-19), Pru Granger in Spirit Riding Free (2017-19), Winter in Santa Clarita Diet (2019), Caitlin Lewis in Pretty Little Liars: The Perfectionists (2019)

Read More at VV — Know the Cast: ‘The Old Man’

There’s Someone Inside Your House Cast: Théodore Pellerin as Ollie Larsson

Character Profile: Makani’s love interest. His parents died in a car accident, an alleged double suicide. Ollie becomes the prime suspect in the murders of several teenagers.

Pellerin’s Resume: Xavier in Boy Erased (2018), Liam in The OA (2019), Cody Bonar in On Becoming a God in Central Florida (2019), Jasper in Never Rarely Sometimes Always (2020), Wayne in Maid (2021)

Read More at VV — Know the Cast: ‘The Bear’

There’s Someone Inside Your House Cast: Asjha Cooper as Alex Crisp

Character Profile: The “bitch-in-residence,” per Makani. She pursues a romantic relationship with a classmate named Rodrigo. Alex is criticized by Makani for her glass-half-empty worldview.

Cooper’s Resume: Jessica in Secret Diary of an American Cheerleader (2013), Sharon in Everybody Wants Some!! (2016), Eva in Snowfall (2019), Kia Williams in All American (2019-21), Vanessa Taylor in Chicago Med (2021)

Read More at VV — Know the Cast: ‘Heart Parade’

There’s Someone Inside Your House Cast: Dale Whibley as Zach Sandford

Character Profile: The son of a local “land baron.” His father owns the 12th largest collection of Nazi memorabilia in North America. Zach theorizes about various murder suspects and provokes classmates with his behavior.

Whibley’s Resume: Caleb Davis in Make It Pop (2015-16), Braxton in Ice (2018), Teenage Danny in Blood & Treasure (2019), Jack in October Faction (2020), Lucas Gruzinsky in Big Shot (2021)

Read More at VV — Know the Cast: ‘Love & Gelato’

There’s Someone Inside Your House Cast: Jesse LaTourette as Darby

Character Profile: An Osborne High student who came out as non-binary at age 11. They are thankful to Makani for continued public support. Darby participates in a dangerous final act quest to locate the real killer.

LaTourette’s Resume: Erin in Z Nation (2016), Sarah in Boy Erased (2018), Junkrat in Miss 2059 (2017), Shelby in The Devil Below (2021)

Read More at VV — Know the Cast: ‘Doom of Love’

There’s Someone Inside Your House Cast: Burkely Duffield as Caleb Greeley

Character Profile: A gay Osborne High football player. He was previously bullied by Jackson Pace, the victim of an opening sequence murder. Caleb emerges as a logical suspect and receives public support from Makani.

Duffield’s Resume: George Michael Kid in Kickin’ It Old Skool (2007), Eddie Miller in House of Anubis (2012-13), Callan in Warcraft (2016), Holden Matthews in Beyond (2016-18), Alex in The Miracle Season (2018)

Read More at VV — Know the Cast: ‘You Don’t Know Me’

There’s Someone Inside Your House Cast: Diego Josef as Rodrigo Doran

Character Profile: Makani’s classmate who wants to live a normal, murder-free life. He pursues a relationship with Alex. Rodrigo secretly takes painkillers and gets exposed in a violent sequence of events.

Josef’s Resume: Armand in Message from the King (2016), Jeremiah Perkins in The Ballad of Lefty Brown (2017), Julio Suarez in Goliath (2018), Tony in Tiger Within (2020), Cooper in Generation (2021)

Read More at VV — Know the Cast: ‘The Lincoln Lawyer’

There’s Someone Inside Your House Cast: Zane Clifford as Macon Bewley

Character Profile: An Osborne High football player. He honors his late classmate Jackson with a public singing performance. Macon later gives a drawing of Rodrigo to Makani.

Clifford’s Resume: Juda in The Stakelander (2016), Aaron in Deceitful Dating (2021), Timmy Ryan in Superman and Lois (2021)

Read More at VV — Know the Cast: ‘The Wrath of God’

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Netflix’s There’s Someone Inside Your House cast also includes BJ Harrison (Chilling Adventures of Sabrina, Maid), Emilija Baranac (To All the Boys I’ve Loved Before, Riverdale), Jade Falcon (The Package, DC’s Legends of Tomorrow), William Edward (Battle of the Bulbs, Blink), Anthony Timpano (A Score to Settle, Riverdale) and Sarah Dugdale (In the Shadow of the Moon, Virgin River).

Q.V. Hough (@QVHough) is Vague Visages’ founding editor.