In recent years, there have been numerous reported sightings of large felines supposedly living and breeding in remote areas of our countryside. So far none has been shot or trapped and their elusiveness is still a mystery. Farm livestock has been attacked but there is always the lurking fear that one day there could be a human victim - for man-eating leopards have preyed upon remote villages in Africa and India for centuries. Gordon Hall is a retired professional hunter from South Africa now living in the Welsh borderlands.When a spate of attacks on sheep and domestic animals begins, he recognises the marks on the carcasses as being those of a large feline. A gamekeeper takes a shot at a Big Cat prowling in his woods but only succeeds in wounding it. Unable to catch rabbits and deer, the creature turns its attention to humans. Hall is called upon to hunt down the vicious killer when all other methods have failed. A rural community lives in terror, not knowing when this Big Cat will strike again.