The Peripheral by William Gibson (2014) G.P. Putnam's Sons

A dystopian weave of not exactly time travel as murder mystery.  In which a gamer girl takes over for her marine veteran brother and witnesses a murder in the future.  Only it’s not her future since her act splits her continuum from the future she sees as a peripheral in a manufactured body.  The future continuum wants her to identify the murderer and not get killed by other people in her own continuum hired by someone else in the future.  The book is fascinating.  The series based on the characters is also visually fascinating, though the plot is vastly different.