"Of Average Intelligence," by O'Neil De Noux, in Black Cat Weekly, #85.
This is the second appearance here by my friend and fellow SleuthSayer. De Noux is a retired police officer so it is not surprising that many of his stories feature cops. As does this.
Let's look at the opening:
"No offense, Office Kintyre. But I'm smarter than you."
Have you already taken offense? I certainly have. Attorney Matt Glick is the speaker and he has recently killed his wife. The cops have a ton of circumstantial evidence against him and he has a ready explanation for every bit of it.
Blood in the bathtub? She cut her hand on an X-acto knife. Hair in the trunk of his car? She borrowed it and had to change a tire. And so on.
In fact the only thing Glick doesn't have a ready work-around for is his own smug superiority, and you know darn well that that is what is going to bring him down. Which it does.
You will enjoy the process.