Horror Hunks: Thomas Elms in I Still See You (2018)

I Still See You centers on Roni, a teen living in a post-apocalyptic world after a catastrophic event ten years before left the world inhabited by ghosts of the dead. When she receives a threat from beyond the grave, she finds herself in a fight for her life from a mysterious killer. Along the way, she finds herself becoming increasingly connected to Brian (played by Thomas Elms), a ghost that lives inside her home. Given his state when he died, he appears only in his underwear for all of his scenes.