They exist. There's both a Dummies book and a Complete Idiot's Guide for Ethics. I'm sure there's others out there. Never read any of them so I'd have no idea what would be good, though.
Just to be clear: ethics and logic as one topic or books on either ethics or logic? My friend just finished a beginner's logic course, and I could get his recommendations if you like; but it had nothing to do with ethics.
Ethics: ''The Elements of Moral Philosophy'' Fifth Edition by Stuart Rachels
Logic: ''Modern Logic: A Text in Elementary Symbolic Logic'' by Graeme Forbes.
These are the ones I used in my Ethics and Logic 101 courses. Hope it helps