Meanwhile, police pursue escaped convict Flint Marko, who visits his wife and sick daughter before fleeing again. Falling into an experimental particle accelerator that fuses his body with the surrounding sand, he gains the ability to control sand and reform his body with it. Marko robs an armored truck, and escapes after easily defeating Spider-Man. NYPD Captain George Stacy, Gwen's father, informs Peter and his aunt May that Marko is uncle Ben's true killer; the initial suspect, the deceased Dennis Carradine, was Marko's accomplice. At his apartment, as Peter sleeps in his Spider-Man suit while waiting for Marko to come out of hiding, the symbiote assimilates the suit. Peter later awakens atop of a building, discovering that the symbiote has colored his suit black and enhanced his powers; however, it also brings out his dark side.