A competing alien race sends an assassin to eliminate the invading force and to protect humanity.

Near an isolated nuclear research facility an alien scout ship is discovered. As the team arrives and set up their operations, command of the find is handed over to Colonel Alexander and his mysterious Project 9.

The team set up in Chicago to investigate a spate of kidnappings but encounter resistance from the local police. Nevertheless they discover a secret cell of alien scientists, who are trying to create a designer drug which turns addicts into frenzied killers.

The aliens are forced to move their unborn infants to a refrigeration facility to save them. Meanwhile Suzanne's ex-husband, an investigative journalist appears, seeking to uncover the truth about the Blackwood project.

The aliens organize a series of armored car heists in order to finance the purchase of rubies for their new laser weapons. Meanwhile, Ironhorse is kidnapped by the vengeful husband of a woman Ironhorse had accidentally shot dead while battling an alien raid at a research installation.

The team act as watchdogs protecting a secret and unprecedented meeting of international alien experts, where they suspect one of them may be an alien.

To escape capture, an alien merges with a pregnant woman. This causes unexpected consequences for the aliens, and for Blackwood's team - and violence for the hospital staff when the woman/alien goes into labor.

The aliens plan to disorganize human society by paralyzing its means of communication.

Harrison is kidnapped by a unique modern artist named "Quinn", who's actually one of the aliens being hunted by his kind. He's mysteriously immune to Earth's bacteria, so the other aliens want to learn his secret through dissection. Quinn wants to set up a dialogue with Earth's leaders to arrange a "peaceful" takeover of the planet as opposed to an all-out slaughter of humanity.

The Blackwood Project investigates individuals who claim to have had "close encounters". The team stumbles onto an alien plot involving implanting something into victims' bodies for the study of the human immune system, setting them free and collecting them later to learn the results. Harrison ends up dating one of the victims, Karen McKinney.

Many centuries ago, one alien ship crashed on earth. The surviving aliens were defeated by a local Indian tribe. The modern day aliens attempt to acquire the ship to assist in their subjugation of the planet.

A noted scientist and old friend of Suzanne's, Dr. Erik Von Deer, is being brain-washed (through signals subliminally implanted in the music of his favorite artist) into secretly working on a serum that will give the aliens immunity to Earth's bacteria. Suzanne arrives for a weekend visit while Von Deer is on the verge of the serum's completion.

The Blackwood team consults with noted linguist Adrian Bouchard (Cedric Smith) to decipher the aliens' transmissions.

Wanting to set off a "tribal war" within the human race, the aliens attempt to detonate a nuclear bomb at a U.S.-Soviet disarmament summit.

Suzanne does some unauthorized research on a new kind of grain that will grow in any climate. The billionaire who invented wants to sell it to the world. Thinking poorer countries will be given money by richer countries. But the aliens have their own plans for the grain, after placing a new deadly poison in the grain, they take over the body of the billionaire who suddenly offers it free to the world.

The Martians encounter another human disease, chicken pox which is crippling their invasion plans. They decide by harvesting human brains so they can produce a cure that will put the invasion back on track. Harrison's team race against time to stop them completing their project.

Suzanne learns that a friend of hers has disappeared from his college campus. Meanwhile the aliens are on campus in search of a bio-weapon.

The Martians attempt to take over a military base that has been used as a secure storage area for much of the information regarding the 1953 invasion. In particular they are seeking the location of Martians who are still in hibernation waiting to rejoin the invasion.

The team is sent to Grover's Mill when it is discovered the 1938 radio broadcast of invasion was real. They meet with a group of local men who successfully fought the Martians 50 years ago and believe the Martians have returned to try and retrieve weapons abandoned in 1938.

The aliens continue to expand their operations. Sparked by random footage shot by a reporter Harrison's the team descend on the previously abandoned town of Beeton, where they find a bustling community that in theory should not exist.

Harrison and the team talk to a psychic woman who studied the aliens after the first invasion. Meanwhile, a group of aliens take over a family and travel cross country in order to awaken more aliens from hibernation.

It's been six weeks without any further activity from the aliens since the destruction of their warships. The powers-that-be believe that the Blackwood Project has done its job and prepare to shut it down. In reality, the aliens are very much alive, but have put all efforts in combating the radiation that protects them from the bacteria from killing them as well.

35 years ago Earth experienced a war of the worlds, humanity's savior being common diseases to which it had long since gained immunity. However, a Pandora's Box is opened when the invaders are accidently revived via radiation exposure, canceling the presence of their microscopic attackers.Their plot to reignite warfare is recognized only by Dr. Harrison Blackwood, who must convince others of the renewed global threat.

In 1953, a worldwide alien invasion would have eliminated humanity had the extraterrestrial invaders not been vulnerable to the indigenous bacteria on the planet. Now an accident at a dumpsite revives the comatose aliens who then shortly attempt to resume the war they started 35 years ago.