Bespoke Keylogger

I am looking for a bespoke keylogger that will be installed on a remote machine to which there is no physical access. You will be responsible for installation. This is a clandestine project to assist in the location and recovery of internationally abducted children and work will be ongoing. The keylogger will be capable of: invisible and undetectable operation and installation operate on a network machine and stand alone remote delivery by email return results in a readable format to the user who has limited technical competency via email If you have an off the shelf solution that is fine as long as it works but it will need to be installed on the target. I wish you to stipulate your charges for successful installation on a target machine.