When it comes to seemingly indestructible cinematic killing machines, you don’t get much more terrifying or more difficult to beat monsters than the eponymous stars of the ‘Alien’ and ‘Predator’ ...

Few franchises boast taglines so indicative as those of the Alien saga. Ridley Scott's chilling first instalment intoned, "In space, no-one can hear you scream" - surely the most alluring horror tag ...