Desc: Al tropico del cancro: Directed by Giampaolo Lomi, Edoardo Mulargia. With Anthony Steffen, Anita Strindberg, Gabriele Tinti, Umberto Raho. While vacationing in Haiti, a married couple meet an old doctor friend who resides there. Dr. Williams has invented a new drug formula, and there are a few unscrupulous parties interested in acquiring it by any means necessary.