Jim Wynorski has made over 150 movies and only regrets a few of them, of which this is one. His main problem was the script which he said he never understood. I didn't have the same issue - mainly I suppose because I wasn't paying full attention and just assumed they were copying Basic Instinct with Marc Singer in the Michael Douglas role of a cop (well SEC investigator here) who is investigating a murder with a fat cop sidekick, that involves questioning a hot blonde (Shannon Tweed, always good value in these sort of movies) who may or may not have done it, and who Singer winds up sleeping with.
When you look at it closely Singer's actions don't really make sense and feel contrived. Ditto Tweed's and Wings Hauser. I don't think it would be too hard to get the drama so Singer was falling for Tweed while investigating her and get blamed for it etc... but the plotting felt convoluted. There was a lot of exposition.
The cast are professional - Tweed has a good old time. But it's really not that good.