It took till the penultimate season of ITV's Poirot before they made their version of Murder on the Orient Express, so understandably it was quite a star-studded affair and was delivered with a certain amount of fanfare and event. This film screened some time before it and I do not think that it is too cynical to note that at least some element of it was promotional in terms of linking to the main film. Another aspect of it must surely have been Suchet perhaps wanting to remind people that he is behind the character and is not just this one thing. The final thing it does is of course to serve as a documentary into the journey and history of the titular train.
In terms of success the film is reasonably good at all of these things. As promotion for the main film, it is lovingly shot and makes frequent references to Christie and Poirot, and it does rather focus the mind on the setting for the film. As a piece to meet Suchet as himself, it is pretty good and he is a good presence in the film, however it must be said he is never as much of a presence nor as charismatic as the character he is most famous for – and occasionally doing the voice doesn't help this feeling. The documentary aspect is decent enough; mostly it is a travelogue and aside from the link to Poirot, it would sit well in those lazy scheduling slots where such celebrity-driven pieces are welcome. This is not to suggest that it doesn't have some nice detail and information in there, but it is never a documentary per se, and the delivery of facts and stories is never the focal point for very long, and the comparatively short running time doesn't help with this feeling either.
It is distracting in a light-entertainment way, and it does serve as a promotional piece for the series, but as one not given to such things, I did not find it much more than this.