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Sail is an mystery novel by the bestselling author, James Patterson, and co-author, Howard Roughan, that was released on June 10, 2008.

Premise:

The Dunnes have set off on a ten day boat trip, a trip that hopefully will bring them closer together, despite the fact that the step-father, Peter is staying behind on land. But only an hour into the trip they're already falling apart. The teenage daughter plans to drown herself, and the teenage boy is high on drugs. Ten-year-old Ernie is near catatonic. But their mother Katherine, with the help of her brother-in-law Jake, is insistent on pulling everyone together, once and for all. Just when things start to take a turn for the better, disaster strikes. Peter is left to pick up the pieces and find his family--but he is eager to start a brand new life. Maybe he's a little too eager.

But as a violent storm breaks out, the boat vanishes without a trace and the family are lost, presumed dead - until now. When a message in a bottle is washed up on a shore, it becomes apparent that there must have been at least one survivor. Who has survived and just what happened to the boat? As it transpires there may be more sinister powers at work, the race is on to rescue the family and discover what happened aboard the luxury yacht.