Marg Helgenberger

An astronaut gets infected with alien DNA during the first mission on Mars and runs amok on earth. Preston and Laura team up with a peaceful, genetically re-engineered Sil to track the monster down.

Environmental protection agent Jack Taggart is fighting big business types led by Orin Hanner who are dumping toxic waste somewhere in the Kentucky hills region. They also killed his fellow agent and are killing the nature of the region.

Dan is a 51 year old executive who learns that his company is being restructured and he is being demoted. Carter, who is 26, replaces him. Dan who has two teenage daughters with another on the way, decides to suck it up and work for Carter. Dan and Carter's working relationship is tested when Carter begins a relationship with Alex, who is Dan's daughter.