I'm not normally a fan of thrillers but this one really drew me in as it doesn't sound too dark and murderous! How bad must things go for someone to wish they'd just let someone drown?! Clever concept of one man telling the other about his life in an airport lounge, so we don't live the story with the protagonist - I wonder if the other man gets caught up in his story from that point on, or it's all told in the past. Makes me want to read it anyway!