Don’t Hang Up (2016) delivers a tense and modern take on the slasher-thriller genre, replacing masked killers with the terrifying consequences of online cruelty. The film centers on Sam and Brady, two popular but obnoxious teenagers who gain viral attention by posting increasingly cruel phone pranks. Their sense of invincibility collapses when a mysterious caller known as Mr. Lee turns their own methods against them.

What begins as a typical night of juvenile entertainment quickly becomes a nightmare of psychological terror. Confined largely to a single location, the film uses its limited setting to create a suffocating atmosphere where escape feels impossible. The pacing is fast and relentless, keeping tension high as each call escalates the danger.

The themes of vigilante justice and digital karma are familiar, echoing elements from films like Saw and Unfriended. However, Don’t Hang Up remains engaging by leaning into the discomfort of watching deeply unlikable protagonists face the consequences of their actions. The film makes no effort to redeem Sam and Brady, instead using their entitlement to justify the antagonist’s morally ambiguous revenge.

One of the movie’s strongest elements is its use of technology as a weapon. Phones are hacked, personal data is exposed, and smart home systems are manipulated to trap the characters inside their own environment. This modern twist adds relevance and taps into real fears surrounding privacy invasion and digital accountability.