K.J. Apa, Scott Adkins & Jake Devlin in Dead Reckoning (2020)

Inspired by a true story, the thriller Dead Reckoning follows Tillie, a young woman living with her aunt in Nantucket after her parents' tragic deaths. She strikes up a summer romance with Niko (played by K.J. Apa) but things turn dark when his brother Marco arrives, looking to enact a terrorist plot connected to Tillie's family. Niko finds himself torn between family loyalty and his new love, as things begin to fall apart. K.J. got out of his shirt for the film's climax. His on-screen brother Scott Adkins showed off some of his chest in an open shirt for his role as Marco when he's interrupted by Niko while having sex. Jake Devlin appeared shirtless for all of his brief screentime, playing a beach goer who takes an interest in Tillie's friend Felicity.