It's a well-told story but honestly was left feeling a little underwhelmed. I was expecting something more thoughtful. This is more of an action-adventure, albeit with Clowes' trademark tone. Given the cover I was hoping that the main character would be female but unfortunately that's not the case. Instead, she was mostly a plot device to motivate the male antihero main character. 
 As far as time-travel stories, I've read more interesting ones, structurally. This one kinda lets the protag get away with what's most dramatic, rather than concerning itself with scifi mechanics. That's fine, but to be honest the ending felt almost too easy. I kept expecting the main character's motivations and decisions to be called in to question or undermined, but that never happened. It was a fun ride, so if you're around give it a spin, but honestly it's not his best work.