Terror is an underlying theme in the play Sorry, Wrong Number by Lucille Fletcher. Terror is a classic element in horror, mystery, and crime-themed literature and pop-culture. Terror is essentially fear brought on by some internal or external individual, situation, or circumstance
The themes present in this story, Sorry, Wrong Number are:
Isolation - Mrs. Stevenson repeatedly mentioned her state of being alone (literally and figuratively)
Betrayal - His husband plotted with George to kill her.
Fear - At first, she feared for the woman's life and she feared for her own.