Questionnaire Result-What is the most intense part of a thriller genre film?

What is the most intense part of a 'thriller' genre film? the results tell me that people think that the main element to make a thriller genre film intense is the use of graphic-with the blood and guts etc. Joint with the second most amount of votes that made a thriller genre film more intense was the characters and the build up in the film/trailer. These results will help me if i decide to do a thriller genre film trailer. The results gathered were from the public, the age range of the people who took the questionnaire was 5-50+, from the 25 people there were 15 men and 10 women. One person out of the 25 answered other and said that 'screaming makes it ore intense and would make people jump'.