Two new cineplex releases this past weekend opened with words that frequently inspire ennui in moviegoers everywhere: “Based on a true story.” Yet while both dramatic thrillers – The Courier and City of Lies – are overly earnest and expository in ways those five-word preambles usually imply, their true (or more precisely true-ish) tales are gripping nonetheless, and the performers carry you through the occasional dead spots. One of those films is mostly tight and polished. The other is mostly sprawling and messy. And I mostly enjoyed them both … but kinda preferred the messy one.