Myriad

"Agent Miriam Randle works for LifeTime, a private law enforcement agency that undertakes short-term time travel to erase crimes before they occur. Haunted by the memory of her twin brother's unsolved murder at the age of six, Miriam thinks of herself as Myriad--an incarnation of the many lives she's lived in her journeys to rearrange the past. When a routine assignment goes wrong and Miriam commits a murder she was meant to avert, she is thrown into the midst of a conspiracy that reaches to the highest levels of LifeTime"--