suspenseful       
adjective uk/səˈspens.fəl/ us/səˈspens.fəl/
 焦虑的,担心的,提心吊胆的
causing a feeling of excitement or nervousness because you are waiting for something to happen or are uncertain about what is going to happen
  a suspenseful thriller 扣人心弦的惊险片 
 Synonym: nail-biting