Detect Lie

A priest who casts this spell is immediately able to determine if the subject creature deliberately and knowingly speaks a lie. It does not reveal the truth, uncover unintentional inaccuracies, or necessarily reveal evasions. The subject receives a saving throw vs. spell, which is adjusted only by the Wisdom of the caster — e.g., if the caster has a Wisdom of 18, the subject's saving throw roll is reduced by 4 (see Table 5 under Wisdom).

Reverse: Undetactable Lie

The spell's reverse, undetectable lie, prevents the magical detection of lies spoken by the creature for 24 hours.

Reversible

Sphere: Divination
(Divination)
Level: 4

Range: 30 yards
Components: V, S, M
Duration: 1 round/level
Casting Time: 7
Area of Effect: 1 creature
Saving Throw: Negates

Material Components:
Detect Lie: one gp worth of gold dust
Undetectable Lie: brass dust