Upgrade
An implant gives a man the superhuman strength he needs to punish the thugs who killed his wife.
A brutal mugging leaves Grey Trace paralyzed in the hospital and his beloved wife dead. A billionaire inventor soon offers Trace a cure -- an artificial intelligence implant called STEM that will enhance his body. Now able to walk, Grey finds that he also has superhuman strength and agility -- skills he uses to seek revenge against the thugs who destroyed his life.