1956. Queen Elizabeth II and Marilyn Monroe are the two most famous women on the planet. Their lives are worlds apart. But what if a momentous summer brought them closer than anyone ever knew?

1956. Elizabeth II is an elegant young mother and wife who has embraced her patriotic duty despite never expecting to take the throne.

Marilyn Monroe is a global sensation and money-making machine for Hollywood, with curves that drive men wild and a smile that lets women know she's in on the joke.

But behind the scenes, they are Lilibet and Norma Jeane. And they have spent the summer of 1956 as neighbours, battling secret demons that their adoring public could only guess at.

Until now...