The trailer for Chernobyl Diaries uses various film techniques to set up tension and build suspense. It begins by establishing the storyline of a group of tourists exploring Chernobyl, then shows footage of the real-life disaster. As the characters arrive in Chernobyl, ominous sounds are heard and they realize they may not be alone. Shots of a creepy doll and disturbed objects imply a threatening presence. The trailer references the director of Paranormal Activity to draw in fans of that successful horror film. It culminates with characters fleeing from an unseen antagonist, leaving viewers wanting to find out who or what threatens them.