While I admired the plotting device used here, and I love time travel stories, and I came of age in and loved Chicago during the period when this is set... nonetheless this novel left a bad taste in my mouth. Both the protagonists were too Mary Sue-ish. The pedantic tone was particularly, and ironically, a bad fit for the sub-theme of punk rock. (If you’re interested in a novel that better captures the motivation and power of punk, check out A Cool Breeze on the Underground). I did admire the foreshadowing, and the building dread in the final few chapters. But overall, I wanted to care more about the fates the characters, but I never really did.