Even if you are completely innocent, you should be very cautious when scheduling an interview with law enforcement, and in fact it is often in your best interest to immediately contact a criminal defense lawyer before proceeding with an in-person interview.
After hearing the case we may suggest that it is not in your best interest to be interviewed by law enforcement, as everything you say can potentially be used against you in a future proceeding. You are presumed innocent so make sure you contact a trusted criminal lawyer first before speaking with law enforcement.