The two movies - The Lie and Black Box - are the first of four original flicks dropping on the streaming service for Halloween, as part of its new 'Welcome to the Blumhouse' collection.
Each film come from Blumhouse, a production company founded by Jason Blum and known for its low-budget horrors, which has grown something of a cult following thanks to modern-day classics such as Paranormal Activity, Split, The Purge, Oculus and Get Out.
Available to watch from today (6 October), The Lie is written and directed by Veena Sud, and stars the likes of Mireille Enos, Peter Sarsgaard and Joey King.
A synopsis for the film reads: "When their teenaged daughter confesses to impulsively killing her best friend, two desperate parents attempt to cover up the horrific crime, leading them into a complicated web of lies and deception."
As for Black Box, which is also now on Prime, the movie follows a single dad who undergoes 'an agonising experimental treatment' after losing both his wife and his memory in a car accident, in turn prompting him to 'question who he really is'.
Directed by Emmanuel Osei-Kuffour Jr., it stars Mamoudou Athie, Phylicia Rashad, Amanda Christine, Tosin Morohunfola, Charmaine Bingwa and Troy James.
And once you've worked your way through those, two other movies will also be added to Prime as part of the collection next week.
Based on the award-winning, best-selling Audible Original production from writer Madhuri Shekar, Evil Eye (2020) is directed by Elan Dassani and Rajeev Dassani, and stars Sarita Choudhury, Sunita Mani, Omar Maskati and Bernard White.
"A seemingly perfect romance turns into a nightmare when a mother becomes convinced her daughter's new boyfriend has a dark connection to her own past," its synopsis says.
Lastly, there's Nocturne (2020), which is written and directed by Zu Quirke in her breakout feature debut.
The film stars Starring Sydney Sweeney, Madison Iseman, Jacques Colimon and Ivan Shaw, and follows a 'timid music student' at an elite arts academy.
As the synopsis explains, she 'begins to outshine her more accomplished and outgoing twin sister when she discovers a mysterious notebook belonging to a recently deceased classmate'.
You can watch The Lie and Black Box on Amazon Prime now, while Evil Eye and Nocturne will be available from 13 October.