Dr. Bendor Grosvenor and Jacky Klein visit the Ulster Museum to investigate what have long been disregarded as low-value copies of works by Flemish artist, Peter Breughel the Younger.They also visit the Northern Ireland Assembly at Stormont, in which a controversial painting once slashed with a knife is now kept in a room away from public view. The subject is believed to be William III and the Pope - these two characters in one picture would be guaranteed to rouse the passions on both sides of the sectarian divide. But has the painting been a case of mistaken identity? Bendor and Jacky investigate.