River of Death is a movie Cannon films picked up in the very late ‘80s, when they were kind of on their last legs, and trying to get by through doing the things that made them successful – capitalizing on other studios successes with low budget films (or optioning films at low cost) that had a similar vibe to them as other successes. In this case, going off of the success of Indiana Jones & The Last Crusade, by optioning a movie that was already under production that had a similar adventure theme. Instead of returning to the Allan Quatermain well that they’d visited twice before, this time they went with a jungle adventure film based on a novel by Alastair MacLean, the author of Guns of Navarone.