This detects moral alignment. In other words, good, evil, law and chaos.

What alignment a given character (or even object or location) may be is a matter of GM judgment, based on Advantages, Disadvantages and/or religion. The vast majority of characters will detect as neutral.

However, there are a few exceptions. Angels and Aasimar always detect as good, while fiends (demons and devils) and Tieflings always detect as evil, regardless of true morality. Modrons (with the possible exception of rogues), most Law Keepers and devils will detect as lawful, while slaadi and demons will detect as chaotic.

Detect (Alignment, Common) [35] 
    Based on Activation Roll [+5%] 
    Analyzing [+100%] 
    Magical [-10%] 
    Spell Components [-20%] 
        Must say "morality" in Latin 
        Must gesture with hands 
Level 2 [39] 
    Add Extended Duration (x3) [+20%] 
Levels 3-7 [43/47/51/55/59] 
    Increase Extended Duration by 1 step [+20%]