TallyMan wrote:
Both guards look identical. I forgot to mention that they are only allowed to say "Yes" or "No" in response to whatever your one question is. The solution to this is quite neat and not difficult. It just needs a little lateral thinking.

This is a logic question and can be answered if one realizes that the TRUTH of a LIE is a LIE, and the LIE of a TRUTH is a LIE. You need one guard to give you the other guard’s answer. Knowing this one could ask a question like, “If I were to ask the other guard which door leads to freedom, what would he say?”
If you ask the guard who always tells the truth, he would tell you the other guard would point you to the door of death. If you ask the guard who always lies, he would tell you the opposite door of the truth-telling guard and point you to the door of death. In either case, both guards will point to the door of death so you should choose the other one.
...I totally answered this myself and at no point did I use Google to find the answer...