THE NO. 1 INTERNATIONAL BESTSELLER. WINNER OF THE 2020 PRIX GONCOURT. 1 MILLION COPIES SOLD. 

No one knows how it happened. But it'll change their lives forever . . . 

During a terrifying storm, Air France flight 006 - inexplicably - duplicates. 

For every passenger, there are now two: a double with the same mind, body and memories. 

Only one thing sets them apart - while one plane lands in March, the other doesn't arrive until June. 

Nothing can explain this unprecedented event. But for each duplicated passenger, an impossible moment of reckoning awaits. 

If there are two of you, and just one life . . . who gets to live it? 

New York Times: Best Thriller of the Year 

Publishers Weekly: Best Thriller of the Year 

Lit Hub: Favourite Book of the Year 

CrimeReads: Best International Crime Novel of the Year 

PopSugar: Best Mystery/Thriller of the Month