I will instead volunteer Lt. Columbo’s opinion. From the pilot episode.
You’re probably right. He sounds just too clever for us. What I mean is, you know, cops, we’re not the brightest guys in the world. Of course, we got one thing going for us: we’re professionals. I mean, you take our friend here, the murderer. He’s very smart, but he’s an amateur. I mean, he’s got just one time to learn. Just one. And with us, well, with us, it’s – it’s a business. You see, we do this a hundred times a year. I’ll tell ya, Doc. That’s a lot of practice. Prescription: Murder (TV Movie 1968)
(They hadn’t quite worked out the lack of grooming in the pilot episode.)