The Five Dysfunctions of a Team by Patrick Lencioni

Second Hand 

After her first two weeks observing the problems at DecisionTech, Kathryn Petersen, its new CEO, had more than a few moments when she wondered if she should have taken the job. But Kathryn knew there was little chance she would have turned it down. After all, retirement made her antsy, and nothing excited her more than a challenge. What she could not have known when she accepted the job, however, was just how dysfunctional her team was, and how team members would challenge her in ways no one ever had before.

In The Five Dysfunctions of a Team, Patrick Lencioni once again offers a leadership fable that is as enthralling and instructive as his first two bestselling books, The Five Temptations of a CEO and The Four Obsessions of an Extraordinary Executive. This time, he turns his keen intellect and storytelling power to the fascinating, complex world of teams.