We saw the spectre of two possible government shutdowns in 2014.
The spectre of "two nations" now pits the desperate anomie of the black ghettoes against the rest of the country, black and white.
The spectre of two scandals in which children's hospitals were found to be removing the organs of dead patients without asking or even informing their parents still looms over the public consciousness.
Thailand gave us something new, in an age of colour revolutions: the spectre of two antagonistic colour revolutions happening at the same time, facing each other across of a gap of deliberate mutual incomprehension.
But the quartet of actors give brave, direct performances and Neil Warmington's design, with its eerie fish tank and patch of green lawn, raises the spectre of two lost worlds.
The chorus of opposition is thought to include Stephen Bogart, the leading man's son, who was quoted saying: "If they want to make a movie about intrigue in North Africa, that's fine, but bringing the spectre of one of the greatest movies of all time into it makes it just another feeble attempt at Casablanca 2".
The Scissor Sisters are haunted by the spectres of two recent American imports: Electric Six and Fischerspooner.
Such a referendum raises the spectre of the two coalition parties campaigning against each other to achieve different outcomes.
Fatherhood is a constant battle with a cartoon spectre of failure: "at one time or other, if not on a daily basis, each one of us fathers is the biggest asshole in the world".
With Libya in the west and Bahrain in the east, the Arab world faces the awful spectre of war on two fronts.
Raising the spectre of the £11 billion personal pensions mis-selling scandal, the 11-strong panel urged ministers not to get too carried away in their enthusiasm for stakeholder pensions.
