Discern lies, also known as detect lie,[2][3] was a divination spell that reveals deliberate falsehoods.


Each round, you concentrate on one subject, who must be in range. You know if the subject deliberately and knowingly speaks a lie by discerning disturbances in her aura caused by lying. The spell does not reveal the truth, uncover unintentional inaccuracies, or necessarily reveal evasions. Each round, you may concentrate on a different subject.

The reversed form, undetectable lie, protected against magical detection of lies spoken by the target for 24 hours.[2]


  1. James Wyatt, Darrin Drader, Christopher Perkins (October 2003). Book of Exalted Deeds. (TSR, Inc), pp. 55, 57. ISBN 0-7869-3136-1.
  2. 2.0 2.1 2.2 David "Zeb" Cook (August 1989). Player's Handbook (2nd edition). (TSR, Inc.), p. 217. ISBN 0-88038-716-5.
  3. Skip Williams (2000). Conversion Manual. (Wizards of the Coast), p. 15.