Act 2 Scene 1 begins with Cassio praising Desdemona's beauty and virtues. Iago notices Cassio's attention to Desdemona and plans to use this to his advantage, saying he will trap Cassio as easily as catching a fly in a web. Iago tells Roderigo that Desdemona loves Cassio to further his plot, wanting Roderigo to start a fight with Cassio at an upcoming feast. Iago suspects Othello has slept with his wife Emilia and fears Cassio, but believes his knavish plans will not be seen until used.