Lady Emerald Devon
Unless you're Detective automatically has Stress Detection, it's may be a skill that you REALLY rregret later. It's a lot of points to use on a skill early on when other skills will actually UNCLAM people. Which, as Ben once stated was the most useful thing.
As Ran states, you'll soon learn how many questions you can ask.
As he also states, they're more the advanced detective, (by which stage, Stress Detection is pretty redundant) therefore as a young detective you go for your set of Crime Scene (Smarts) and Interview Skills (Tough or Charming).-Reading the cfm's Welcome Newbie's post will give you more information.
(AND also, hynotism should work better with Charming gear as far as I know... :)
*takes this new newbie question and answers and tacks it on to cfm's Welcome Newbies post*