I only have myself to blame because I wanted hard sci-fi, and boooooy did I get it. The premise is: “It‘s NCIS! Solving crimes via time travel! Something something apocalypse!” It was like catnip to me (not the NCIS part because really?). I was instantly engrossed, but the book fizzled out for me. Amazing concepts, twists and turns galore, but too much gore plus and ending I hated left me cold. 2/5