This engineer left the company they worked for shortly after completing the installation of an important mystery machine (No, not the one from Scooby-Doo.) For some reason, the manager at the client's site kept their number and contacted them personally to come and rectify an error with the machine. They agreed that the engineer would come in on the weekend to complete contract work on the machine at twice their usual rate. Everything was going according to plan until the manager came in and to…