Data loss generally results from three types of accident: user error in deleting a file they didn't intend to, some repairable disk or directory corruption, or an unrecoverable total (mechanical) drive failure. Cleverfiles' Disk Drill Pro institutes, well, a clever way of recovering files that have been lost due to causes one and two, and has a refreshingly candid way of educating users about file deletion and how various factors may hinder recovery. Should it be part of your utility toolbox? We give this drive saver a spin in our exclusive review.