Journal articles often provide the most current, in-depth investigation into a specific topic. Relevant articles can be found using the databases listed on this page.
Many databases allow searches for reviews in addition to scholarly articles. Often you can limit your search by using the document type "review". Combine this with a search using the film title, and this should retrieve film reviews. It is helpful to know the film's release date since most reviews are published after the release.
Older film reviews can be found using the old, print, film review periodicals found in Omni. Search Omni by the subject "Motion pictures -- Reviews -- Periodicals".