We spotted Simon last night. He's been hanging out under the cottage next door, and apparently Mr. Crankypants who lives there felt no need to let us know that fact for, oh, a month.
We had a spirited chase through our neighbor's landscaping last night, then gave up when it was clear we would not catch him. I fed him some food from a distance, and this morning I went to the pound and borrowed a trap.
So far, he's eaten all the food I left in a little trail up to the entrance. I retreated indoors and check on it every now and then. He's pretty hungry looking, so I think he'll go in the trap sometime this afternoon when he thinks the coast is clear.