Abjuration
Level: Assassin 3, Avenger 3, Corrupter 3, Magewright 3, Mystic Ranger 4, Ranger 4, Sorcerer 3, Wizard 3, Trickery 3, Urban Druid 3
Components: V, S, M
Casting Time: 1 standard action
Range: Touch
Target: Creature or object touched
Duration: 1 hour/level
Saving Throw: Will negates (harmless, object)
Spell Resistance: Yes (harmless, object)
The warded creature or object becomes difficult to detect by divination spells such as clairaudience/clairvoyance, locate object and detect spells. Non-detection also prevents location by such magic items as crystal balls. If a divination is attempted against the warded creature or item, the caster of the divination must succeed on a caster level check (1d20 + caster level) against a DC of 11 + the caster level of the spellcaster who cast non-detection. If you cast non-detection on yourself or on an item currently in your possession, the DC is 15 + your caster level.
If cast on a creature, non-detection wards the creature’s gear as well as the creature itself.
Material Component: A pinch of diamond dust worth 50 gp.
Source: Player’s Handbook (Page 257)