Slick is Missing!

Well Slick kitty is MIA. The last time we saw him was Monday night for dinner, it is now Sunday the 27th and still no Slick. I went to Animal Control on Thursday to see if anyone had picked him up and turned him in but no luck. We have searched the roadways in the event he was hit by a car but never found a body. If he was ok I am sure he would come back home, however he was our resident hunter and prone to investigating things that he had no business messing with to include getting in vehicles that didn't belong to him so who knows. I can only hope that perhaps he is at someones house and living the life of luxury as an indoor house cat.
Slick showed up on our doorstop as a young kitten, he was very sweet and very skinny. After about 1 month when it seemed he was here to stay I took him to get his shots and neutered. He brought home Black Kitty about 6 months later, they were always together play fighting, chasing each other and stalking small critters around the property. Slick has only missed one feeding in the entire two years he was here and that's because I accidentally locked him in the horse trailer, so he didn't really miss that feeding as I heard him crying and let him out.
The first couple of days that Slick was gone Black Kitty and Abbie seemed to be on edge so perhaps they know something I am better off not knowing. Black Kitty who has always been reserved and shy is now very active about coming to see us and sleeping on the porch. I have never been able to catch him so I can't let him in the house (even though I want too) as he might have something contagious and Naomi is fighting her own battles with bowl issues so we certainly can't take a chance on her getting sick with something else.
I will check the pound again next week and hope to find Slick but unfortunately my hopes are not high on finding him. We did have him micro-chipped so if he is scanned our address will show up and maybe he can come home. We all miss him terribly.