One night in 1986 an abandoned baby girl is found in a cupboard at Heathrow airport. A year earlier Martha Clio & Jocasta had met by chance at the start of a backpacking adventure: they travelled together briefly & then went their own ways swearing to meet again when they return home. But it would be a long time until they met again: not until Kate the foundling is a teenager & all three are leading successful lives. Martha is a single highly paid lawyer Clio a doctor locked in an unhappy marriage & Jocasta a reporter in love with a charming commitment-phobe. Which of them is Kate's mother? Why was she desperate enough to do such a thing & how did she survive it?