Sounds to me very much like Carroll bucks the lass, his ex gets jealous and confronts him, things get physical and the woman comes off worst.
One more thing
http://www.dvdbeaver.com/film/DVDReviews22/a%20peter%20falk%20columbo%20season%205%20dvd%20review/sa%20columbo%20peter%20falk%20season%205%20dvd%20review%20PDVD_020.jpg