False Belief

Enchantment (Compulsion) [mind-affecting]
Level: Bard * 2
Components: V, S, M (lemon juice and a scrap of parchment)
Casting Time: 10 minutes, plus length of memory to be altered
Range: touch
Target: willing creature touched
Duration: 1 hour/level
Saving Throw: None
Spell Resistance: yes
  You temporarily alter the target's memory (similar to modify memory) to eliminate, change, or implant a memory of up to 1 hour in length. When the duration of this expires, the target's real memory returns, and the false memory fades to little more than a vague outline, like a dream. This false memory seems true to the target, so effects that detect lies or force the target to speak the truth (as the subject understands it) don't detect the falsehood.