Storeria occipitomaculata ? (Dekay's Relation)
http://www.herpsoftexas.org/content/red-bellied-brownsnake
google images, and the natural range, and coloration of localities, are all over the place.
The range map looks like close to Houston (Cypress, OP's Location)
Ok, I think I'm leaning more towards brown snake now....have been looking a lot at pictures and I did find a few with light checkers on their body. so....having said that, it looks like you have a pretty young brown snake their. which might explain the more reddish color. but i'm not sure if that would make a difference.
The Dekay’s brownsnake is relatively small and grows to just over 50 centimetres in length.
they do eat slugs yes, but they get much bigger then 10"
http://www.ontarionature.org/protect/species/reptiles_and_amphibians/dekays_brownsnake.php
I find them all the time around here and decided to take one inside for a day this summer to show my kids, it decided to give birth right that day and leave me with 17 babies. all at about 3,5" (put her and the babies back where I found her).