Emmerdale - Current Episode Discussion - III

[Son of Cain]

would craig's office have cctv or wiped, samson could retrieve as he tech savvy

Data can only be retrieve if it has not been overwritten. All the data in a file is not always stored on the same place on a hardrive, that's why files sometimes take a while to open. Sometimes parts of a file can be recovered but other parts cannot. Doubt Samson would be allowed access to the office CCTV.