Meet Willa Waters, aged 8 . . . 33 . . . and 93.

On one impossible day in 1965, eight-year-old Willa receives a mysterious box containing a jar of water and the instruction: ‘One ocean: plant in the backyard.’ So she does - and somehow creates an extraordinary time-slip that allows her to visit her future selves.

On one impossible day in 1990, Willa is 33 and a mother-of-two when her childhood self magically appears in her backyard. But she’s also a woman haunted by memories of her dark past – and is on the brink of a decision that will have tragic repercussions . . .

On one impossible day in 2050, Willa is a silver-haired, gumboot-loving 93-year-old whose memory is fading fast. Yet she knows there’s something she has to remember, a warning she must give her past selves about a terrible event in 1990. If only she could recall what it was.

Can the three Willas come together, to heal their past and save their future, before it’s too late?

Tabitha Bird’s stunning debut is a magical, life-affirming novel about heartbreak, healing and learning to forgive yourself.