I read the book before I saw the movie, and consequently, I wasn't confused by the complicated plotline.
As a consequence of its narrow lanes, the bridge was obsolete within five years of opening. The bank failed, and as a consequence, many of the town's businesses closed or moved away.
Carefully consider the consequence of your next action.
There are many ways in which you could use the word consequence in a sentence. You could say that the consequence for not paying an electric bill is the shut off of your electricity for example.
What is the consequence of always telling the truth? His action was of little consequence to the team's efforts.
As a consequence of his broken leg, he could not go on the skiing holiday.
Using the word "then" at the beginning of a sentence is not incorrect. However, it does not make a sentence complete. A complete sentence must have, at a minimum, a subject and a verb. "Then" is neither of those.
A consequence is the end result of the behavior. The behavior is the act. The consequence is the result. For example, the act (behavior) of armed robbery could lead to the consequence of a prison sentence.
Punishment Price Fine Sentence Consequence
Because of your actions
After not doing my homework, the cosequnce was detention.
Hopefully, the avoidance of pregnancy.
The consequence to sins is a very grisly punishment.