In the young adult movie genre it is rare to find a film that properly explores the grey between 'good' and evil'. The Death Cure does this, and does it beautifully.
This movie may not have the best paced plot, or the most logical action/escape scenes, but it has a heart. It doesn't follow a group of heroes who set out to save the world; it follows a group of friends who just want to rescue one of their own, and are willing to put themselves at risk to do it.
The main strength of the Death Cure in comparison to the other instalments is its ability to articulate the moral question at the heart of the whole series: Is it right to sacrifice your humanity in order to save lives? The series provides no clear answer, instead allowing the audience to empathise with both the protagonists' and antagonists' motives. Everyone (except maybe Janson) was just doing what they thought to be right. The scenes towards the end of the film, however, do highlight how disenfranchisement, caused as a result of WKCD's actions, can halt any progress and bring about destruction all the faster (a theme perhaps more relevant to the present day than 'the government is evil, let's take it down' i.e. The Hunger Games).
Overall the film stays relatively true to the main themes of the novel, with only minor plot adjustments, and is an enjoyable and thought provoking watch. The ending scene is particularly powerful and brought many people in the cinema to tears.
Review of Maze Runner: The Death Cure
