Video doorbells are no longer just tools for catching parcel thieves or telling the postman to leave a package behind the wheelie bin. Today, they form a massive, decentralised surveillance network. For the criminal justice system, a single doorbell camera can provide significant value in an investigation. But a video clip is not an objective truth. Like any digital evidence, it must be interrogated, authenticated, and understood. Look past the pixels and dive under the hood. Explore the hidden data lifecycles, the technical and what it really takes to turn raw smart-home footage into evidence at court.