Robin's Ruminations

You're working on a personal injury case, an auto tort.  The statute has already run and 80 of the 90 days on the filing have already elapsed.  You've made multiple attempts at the target address but never found anyone home.  Neighbors say the targets, Mr. & Mrs. Smith, live there.  For the first time in all your attempts a car is parked in the driveway so you call your office and get the plate run through IVIPS.  Sure enough the plate comes back registered to the Smiths.  You knock on the door and a man answers.  "Mr. Smith?" you ask.  He looks you up and down and says, "No, I'm not."

What is your next move?