filter:topic.get, surprisingly never implemented till today

src/topics.js

@@ -304,9 +304,11 @@ var async = require('async'),
 				topicData.locked = parseInt(topicData.locked, 10) === 1;
 				topicData.pinned = parseInt(topicData.pinned, 10) === 1;
 
+				plugins.fireHook('filter:topic.get', topicData, function(err, topicData) {
 					callback(null, topicData);
 				});
 			});
+		});
 	};
 
 	Topics.getMainPost = function(tid, uid, callback) {