Precious Ramotswe, Botswana's premier lady detective, is a little short on help. The co-director of the agency, Grace Makutsi, is busy with her own case, her client none other than their erstwhile assistant, Mr. Polopetsi, who has unwittingly involved himself in a pyramid scheme. The agency's other assistant, Charlie, may also need more help than he can offer, as he is newly embroiled in a romance with a glamorous woman about whom the others have their doubts. So when a young Canadian woman approaches Mma Ramotswe with a complex case, it's up to her alone to solve it—with her signature intuition and insight, of course. The young woman spent part of her childhood in Botswana and needs help finding a long-lost acquaintance. But much time has passed, and her memory yields few clues. The difficult search—and the unexpected results—will remind them all that sometimes it's those we think we know best who most surprise us.