Murder and moral obligation mingle in this whimsical new series from the author of the smash hit The No. 1 Ladies Detective Agency. McCall Smith's new heroine is Scottish-American philosopher Isabel Dalhousie, a single woman of independent means who edits the esteemed Review of Applied Ethics and presides over the titular club, When Isabel witnesses fund manager Mark Fraser fall from a balcony after a performance at an Edinburgh concert hall, she feels obliged to investigate the gentleman's demise. "I was the last person that young man saw," Dalhousie tells her beloved niece, Cat. "The last person, And don't you think that the last person you see on this earth owes you something?" Given her affinity for applied ethics, questions of conscience are a daily concern for Isabel, and the more she thinks about Fraser's fall, the less accidental it seems. Among those who might have pushed him; his shifty roommate, his colleague's scheming spouse and a disgruntled broker with a craving for cash.