Several shows contain plot threads that link them together. For example, the "Innobotics arc" - the story of lifelike androids created by the Innobotics Corporation - runs through these shows: Valerie 23, Mary 25, The Hunt, In Our Own Image, and Resurrection.
On July 24, 1997, humanity destroyed itself (and all other mammals) in a biological war in what became known as the Day of Silence or the Biocaust. Only a few hundred androids were left to populate the Earth.
This was the series' first post-apocalyptic episode.
Cain finds an issue of "Newsweek" in the ruined city featuring the headline "Bosnia - Clinton Gets Tough - At Last - Will Air Power Be Enough?" The issue in question is Vol. CXXI, No. 19 which was published on May 10, 1993.
This episode takes place in 2009.