Tim Powers' time travel novella, Salvage and Demolition, does seem to pack some punch, according to reviewers. The latest, from Green Man Review:
The pleasures of this slender volume—21000 words—are manifold. The banter between Sophie and Richard is snappy as hell. The plotting of the various time travel loops is airlessly tight and effortlessly elegant. And the style is elegant and clean, sweeping the reader along to where it becomes impossible to put the book down. This is a read-in-one-sitting gem, in part because of its length and in part because it’s so damn addictive… Salvage and Demolition is quintessential Powers, pure evidence of a master working in his wheelhouse again.