This is true... the kidnapped victims start randomly wandering and suggest "I need a little help here" verbally when you hide.
The Hostiges / Villains you are supposed to free from captors will actually attack and help when you are still hidden.
(Another side note, before you get your travel power like SJ, if the enemy is up on a rafter or storage shelf, remember to turn your hide off... I jumped up and down and up and down for a minute trying to get him to shoot me so he would jump down from his perch, only to go DUH! and turned hide off)
