Occassionally, users may arrive to pages that contain empty information - e.g. missing image of a particular actress or movie poster, an empty watch list, wrong URL, etc.
Perhaps except the last example, all are highly likely to happen. To minimize its negative effects on user experience, these are what I did:
Created a placeholder image that is coherent to the theme of my app. More importantly, set that as a default image for all images and replace them to real images only if that particular image is available in The Movie Database (TMD) .