Levin's stage play Footsteps was adapted for television in 2003 by CBS. Their Ken Raskoff shared with the LA Times that CBS had initially planned to do it as a live broadcast (a compelling idea), but felt it required too many closeups to make that practicable.
Levin felt the television adaptation was “highly unfaithful,” in large measure due to significant changes having been made to the character of its thirty-something heroine, in order to accommodate the casting of later-career Candice Bergen. He wrote to a colleague in 2003: “...significant relationships have been altered and there’s scarcely a line of my dialogue. The bones of the play are there though, and it’s fairly suspenseful.” (In 1982, Levin described his ideal casting of Footsteps' female lead as being either Patti Lupone or Swoosie Kurtz.)
You can read more of Levin's thoughts on Footsteps, and its TV adaptation, in this 2003 LA Times interview.
Levin got his start in writing from a 1950 CBS television writing contest. But all his major TV output was produced on the other two major networks, NBC and ABC. In 1978, Levin told syndicated columnist William Raidy “Some day, I'd love to do something for CBS. I feel I owe them something. It's a shame, by the way, that they only ran that contest that one year. What a good opportunity for budding writers.” Perhaps 25 years later, in 2003, Footsteps fulfilled that debt.