The Absent Are Always Wrong

S3 E4: A bus is abandoned in a vacant lot, with its driver, Aziz, murdered inside. For Candice and her team, everything points to a robbery that went awry. They find surveillance camera footage that supports their theory, and quickly identify two young men who appear to be the assailants. But when the police bring them in, the youngsters deny killing the driver. They claim that Aziz hired them to stage a fake attack. Why? What was he trying to hide?