Meaning of Denouement

The 1^st thing wrt Denouement that needs to be observed is that it is a French word.
The 2^nd thing wrt Denouement that needs to be observed is the way it is pronounced: dey-noo-mahn.
The 3^rd thing wrt Denouement that needs to be observed is its origin. It is derived from the French word desnouer, which further comes from ‘des-, de-‘ (meaning to undo) + nouer (meaning to tie a knot). So in simple laymen terms, it means to undo a knot.
The 4^th thing wrt Denouement that needs to be observed is its usage. It represents the final outcome of a situation, be that the climax of a novel or a real-life dispute:

1. I concocted a whole list of factual statements about a supposed crime, rather in the way a detective might in the closing stages of a criminal investigation just before the denouement is reached, and decided to let the students solve the mystery. — The Perils of Teaching « Tales from the Reading Room

2. For instance, when we read a detective novel, we have a different experience of the story before and after the denouement is reached. — Not A Review of Lolita « Tales from the Reading Room

The dictionary definitions for Denouement are as follows:
1. The final resolution of the intricacies of a plot, as of a drama or novel.
2. The place in the plot at which this occurs.
3. The outcome or resolution of a doubtful series of occurrences.

Word in context:
The following is an extract from The Guardian used for educational purposes: