In this cracking jungle-set treasure hunt, director Robert Zemeckis spices up a deliberately old-fashioned matinée adventure with tongue-in-cheek gags, unpredictably clever touches and top-of-the-range action. Kathleen Turner gives an exhilarating performance as the New York novelist who forsakes her cosy Manhattan lifestyle to rescue her sister in the jungles of Colombia. Turner dazzles in a role that proved a career turning point, and there's a wonderful chemistry between her and world-weary co-star Michael Douglas.

Though she can spin wild tales of passionate romance, novelist Joan Wilder has no life of her own. Then one day adventure comes her way in the form of a mysterious package. It turns out that the parcel is the ransom she'll need to free her abducted sister, so Joan flies to South America to hand it over. But she gets on the wrong bus and winds up hopelessly stranded in the jungle.