Cloudburst is a dramatic film that centers around World War II veteran and expert code breaker John Graham (Robert Preston). John tragically loses his pregnant wife in a hit-and-run accident and immediately wants revenge. The two people who hit his wife have refused to help John, so he begins to plot his revenge on them. He begins a trip across England as he searches relentlessly for his wife's murderers. To add more drama to this movie, John also has someone searching for him, a Scotland Yard inspector, Davis (Colin Tapley). This movie proves to be the thriller as John searches for his wife's killers with Inspector Davis right on his heels. John always manages to stay one step ahead of Inspector Davis as he works hard to bring justice to his wife's death, but as the movie plays out John might not always be one step ahead of Inspector Davis.