Porter is shot by his wife and best friend and is left to die. When he survives he plots revenge.

A newspaper photographer, Jean, researches the lurid and sensational axe murder of two women in 1873 as an editorial tie-in with a brutal modern double murder. She discovers a cache of papers that appear to give an account of the murders by an eyewitness. The plot weaves between the narrative of the eyewitness and Jean's private struggle with jealousies and suspicions as her marriage teeters.

The space shuttle Churchill is assigned to observe Halley's Comet under the command of Colonel Tom Carlsen. They see a strange form attached to the comet and Carlsen goes with a team to investigate. They find three humanoid life forms in caskets and they bring them to the Churchill. However, Earth loses contact with the shuttle and the Space Research Center sends another spacecraft to search the Churchill. They find the crew dead and the shuttle burnt and one rescue pod missing. They bring the...

A squad of National Guards on an isolated weekend exercise in the Louisiana swamp must fight for their lives when they anger local Cajuns by stealing their canoes. Without live ammunition and in a strange country, their experience begins to mirror the Vietnam experience.

A trooper with the British Special Air Service (SAS) infiltrates a radical political group who are planning a terrorist operation against American dignitaries. A glamourized look at the methods and tactics of the famed British anti-terrorist squad.The SAS are a elite army unit which as well as its Anti terrorist role also performs covert and overt training of friendly countries armed forces and operates enemy lines.

A pair of shuttle astronauts leave their spacecraft to repair a satellite. There's an explosion. NASA loses contact for two minutes, but the both are rescued and safely returned to Earth. Eventually it becomes evident that neither of the astronauts is quite the same.