Part of my plot is going to be a mystery. The problem is that I’m not very good at intrigue. I'm thinking that a previous employee of my MC’s took offense at being fired from a grooming position, but I am not entirely sure what for. I’m thinking he was smoking in the barn and was caught, but I’m not sure. It seems REALLY obvious if it is the former employee, but I'm not sure who else might have done it. I need a motive (is being fired enough motive?) and an ability to cause problems. I know that the culprit eventually sets a fire in the barn, but I need a couple other things that he can do to cause problems for the farm. Any suggestions?