In diary entries, Charlie tells how a brain operation increases his IQ and changes his life. As the experimental procedure takes effect, Charlie's intelligence expands until it surpasses that of the doctors who engineered his metamorphosis. The experiment seems to be a scientific breakthrough of paramount importance until Algernon begins his sudden, unexpected deterioration. Will the same happen to Charlie?

    The father has a story to share before it’s too late. He tells his son about a courageous little girl lying in a hospital bed a few miles away. She’s a smart kid—smart enough to know that she won’t beat cancer by drawing with crayons all day, but it seems to make the adults happy, so she keeps doing it. As he talks about this plucky little girl, the father also reveals more about himself: his triumphs in business, his failures as a parent, his past regrets, his hopes for the future. Now, on a cold winter’s night, the father has been given an unexpected chance to do something remarkable that could change the destiny of a little girl he hardly knows. But before he can make the deal of a lifetime, he must find out what his own life has actually been worth, and only his son can reveal that answer. With humor and compassion, Fredrik Backman’s The Deal of a Lifetime reminds us that life is a fleeting gift, and our legacy rests in how we share that gift with others.