If I saw the episode for the first time today, I would immediately have thought that Dian had crossed the cartel and Hector Salamanca took care of things (for the Breaking Bad fans out there).

Absolutely, Pete! Last week was my first post-Breaking Bad viewing of Columbo Cries Wolf, and I immediately recognized Hector. First time I've seen him out of the wheelchair. I'm not familiar with the actor, so this was the first time I've seen him elsewhere.