Dr. Peter Hobson has created a monster. Three of them in fact.

In order to test his theories of immortality and life after death, he has created three electronic simulation of his own personality.

The first Hobson has all memory of physical existence edited out. It will simulate life after death.

The second Hobson is without knowledge of aging or death. It will simulate immortality.

The third Hobson is unmodified. A control.

But now all three of them have escaped from Hobson's computer into the worldwide electronic matrix.

And one of them is a killer.