Mach2burnout

I have an 01 F150 Screw with a 4.6 auto. The other day I parked at work after making my morning commute and all was right in the world. I got in the truck that evening to go home and it would not shift out of park. At first I thought it was because of the way I had parked on a slope. I can shut the truck off and shift it to neutral and then crank it up and go on. But once I shift back to park I have to shut off the engine and shift it into neutral in order to drive it. Also, all the interior lights have went out since that time.

I have checked all the fuses and all are good. Any ideas as to the problem?