Mask Alignment (Su)

Amaster spy of 2nd level or higher can alter her alignment aura to deceive spells that discern alignment (such as detect evil). She may choose to detect as any specific alignment, or to detect as no alignment at all. This ability does not protect against spells or effects that cause harm based on alignment. Masking her alignment aura is a standard action, and lasts until she changes it again or ends the effect.