Fingerprinting In The Lab : What's the difference between a 'visible fingerprint' and a 'latent fingerprint'?

Richard Saferstein (Former Chief Forensic Scientist) gives expert video advice on: How are fingerprints detected at a crime scene? | What's the difference between a 'visible fingerprint' and a 'latent fingerprint'? | How are fingerprints preserved in CSI? and more...