I admit I was thrown off a little from the very start of this otherwise fine poem. I view these things in letterbox style (so I can disguise my poem reading at work), and so when I saw the title "Siren" I instantly thought of deadly allure.
Sure enough, there's plenty of talk of guilt, of getting caught, of knowing the gig is up, and then, the images of gathering death and the need for rescue. In that sense, surely the title fits. When I hear a siren I can understand the double-sided notions of sirens, the fear of getting caught, and the desire to be rescued.
I guess I was hoping for some exploration of us being unequivocally drawn to sirens -- rubbernecking -- and at the same time being obliquely told by the sirens to get out of the way. On the latter note, isn't it interesting that sirens of today perform a counterpurpose than those considered sirens in the Homeric sense?
That said, I thought the poem captured the duality of the signals that we produce to let ourselves know both to come and to go.