The Flight Attendant by Chris Bohjalian

Cassie is the epitome of an unreliable witness so when she wakes up next to a very dead man after a drunken binge blackout she knows she can't go to the authorities. What she does do, well meaning or not, is throw more suspicion on herself with every move. The FBI is onto her, her flight attendant co-workers don't trust her and even her sister won't trust her alone with the kids. The reason her date that night was killed remains a mystery and whoever killed him is sure to come after Cassie to shut her up. You will find yourself shaking your head at all the mistakes Cassie makes but then rooting for her to come out of it intact. There is also the undeniable feeling that any one of us could find themselves in the wrong place at the wrong time. Cassie has to hit bottom before she can find her way back to the surface. Heartfelt and human, this is one thriller to jump headfirst into.