The crew on the U.U. starship Intrepid notice that during away missions, people start acting in strange ways, and at least one normal crew member gets killed while certain officers never do. It seems the best they can do is avoid it, as the cause of the effect is unknown--or is it? 
 This book is many things--a gentle spoof on and homage to the original Star Trek, a condemnation of bad writing, and SFnal musings about how alternative universes might interact through the power of fiction. It has the usual Scalzi conversational style, where all the characters are sarcastic in the exact same way. Still, as I said in my review of Zoe's Tale, it's a fun sarcasm to read. Recommended for Trek fans and anyone else who likes SF that is slightly meta.