I was startled at the unexpected appearance, but smiled to give a welcome, and continued with the sermon. FP came in-- but did not sit down, instead approaching a Current Parishioner. They held a brief, whispered conversation, and then left.
Keep in mind that this is a SMALL congregation - attendance in the teens this morning-- so this did not go unnoticed. However, we continued in worship. A while later CP returned, but FP did not.
I asked CP after the service if everything was all right-- had FP been ill, or was there some other emergency? I assumed it must be something urgent, if it had been important enough to interrupt worship.
Turns out that FP had locked the keys in the car, and needed a ride-- to another church.