CERTH-ITI participated to the Known-Item Search (KIS) Task of TRECVID 2011 with the interactive video retrieval engine VERGE. VERGE produced the best results, among the submissions made by all institutions participating to TRECVID 2011 KIS task (12 runs from 4 different institutions) with interactive systems. The latest version of VERGE supports advanced retrieval functionalities including visual similarity search, visual concept-based retrieval, user implicit feedback-based fusion, video similarity based on PLSA and full text search. More information about VERGE is available here. Feel free to try on line the latest version of VERGE and search in the TRECVID 2011 KIS test data collection.