THE ONE WHERE MMA POTOKWANI SAVES THE DAYGrace Makutsi''s husband, Phuti, is in a bind. An international firm is attempting to undercut his prices in the office furniture market. To make matters worse, they have a slick new advertising campaign that seems hard to beat. Nonetheless, with Mma Ramotswe''s help, Phuti comes up with a campaign that may just do the trick. Meanwhile, Mma Makutsi is approached by an old friend who has a troubled son. Grace and Phuti agree to lend a hand, but the boy proves difficult to reach, and the situation is more than they can handle on their own. It will require not only all of their patience and dedication, but also the help of Mma Ramotswe and the formidable Mma Potokwani. ''The novels of Alexander McCall Smith aren''t yet prescribed on the NHS, but it might not be a bad idea'' Daily Telegraph''Hugely enjoyable'' Sunday Times''A clever, hilarious and sometimes poignant mystery'' Book Reporter