(He sees who is back.) As the BRIGADIER watches, LIZ listens to his chest.) Professor Stahlman! The DOCTOR is stood there, his immaculate coat and trousers covered in stains.) The rubbish tip. You must stop this drilling immediately!
Plan: A: The Doctor; Q: Who must stop Stahlman before his earth suffers the same fate as the parallel universe? Summary: The Doctor is back in his own universe and must stop Stahlman before his earth suffers the same fate as the parallel one.