Detect Fiendish Presence

[Atalius]

http://archivesofnethys.com/SpellDisplay.aspx?ItemName=Detect%20Fiendish%20 Presence

How does this spell work? Can I simply just cast it using a standard action for 1 turn to know if anything within 60ft is an evil outsider? Would this spell go through walls?

[*Thelith]

It's a 60 ft cone. And in 1 round it just gives a yes or no. 2nd round would give numbers. You can change the direction of the cone while concentrating to check all around you.

Like detect evil:

Each round, you can turn to detect evil in a new area. The spell can penetrate barriers, but 1 foot of stone, 1 inch of common metal, a thin sheet of lead, or 3 feet of wood or dirt blocks it.

[Atalius]

Thanks a lot very helpful!