Why+are+all+the+character+of+book+always+falling+under+Iago's+schemes?

Chantelle- Their all falling for his plan to help him because of the fact that he lies to them, and doesn't ever tell them the master plan. He manipulates all the characters into doing his bidding, so that his plan can come to life. Also if the characters didn't believe him, we wouldn't really have a story. Iago's pretty much the stereotypical bad guy that everyone trusts and believes, but is always planning something.

Julio: I believe the main reason in which Iago's plan is working perfectly is mainly because there is no communication among characters to find out what Iago is really doing. The characters are often manipulated by Iago, but they never communicate with the other characters, hence why Iago's plan seems so effective. Also the way Iago try to perceives in front of everyone makes him the last person to suspect to doing something malicious.