After his wife and child are shot by British troops during a Belfast riot, an ex-IRA explosives expert (Rod Steiger) plots to blow up Parliament and assassinate Queen Elizabeth in revenge. Tension mounts as his complex plan nears success and then begins to unravel. Once controversial for including actual footage of the English monarch, this unnerving thriller co-stars Lee Remick, Trevor Howard. 103 min. Widescreen (Enhanced); Soundtrack: English.