surveillance cameras capture dan markel arriving at the fitness center in his black honda. watch as this prius enters the parking lot. the cops say it's the same one rented by garcia and rivera. markel is then seen entering the center. meanwhile, outside, cameras show the prius suspiciously moving around to different parking spots. later, markel is seen driving away from the center. watch closely as that same prius follows him out. 10:44 a.m., this city bus camera captures markel's honda as he drives home. seconds later, we see his unwelcome shadow, that green prius. markel is shot in his driveway around 11:00 a.m. police say that shortly after that, another bus camera shows the prius driving the opposite direction, away from the house. later that same night, garcia and rivera are back in miami. spotted by a security camera in that prius withdrawing money at this atm. >> there is a sense about this case that they're not really trying that hard to cover their tracks. they're just going about business pretty openly. >> reporter: convinced they have their suspects nailed dead t