DS9-For The Cause. Odo and Eddington tell Sisko that they suspect Cassidy Yates is a Maquis smuggler. What I love about about this episode is how the audience is let in on the secrets and can watch and understand characters's emotions and motivation on a deeper level while the other characters on screen are in the dark. Sisko knows Cassidy is in the Maquis and he wants to save their relationship so he suggests they drop everything and go on vacation. She is unaware of his motives and inner struggles while the audience can feel for them. Meanwhile Eddington has everyone fooled which adds a dramatic twist and gives the audience another dimension of subtlety to enjoy. This episode is a nice blend of heartfelt character drama and intrigue.