Detect Charm

Standard Action | V, S | 60 ft
Concentration, 1 Minute/level | None | No
As per detect magic, except that it detects only charm, compulsion, and possession effects. You immediately detect the strength and location of each such aura on all creatures in the area. You can recognize when creatures in the area are
using these effects on others by attempting a Sense Motive check as a standard action (DC = 20
+ caster level).