This Is Your FBI - The Unwelcome Guest

It is dinnertime in the home of the John and Emma Fulton, who live near a small city in upstate New York. Emma is in the dining room waiting for her husband to come home from work. John walks in and says "Emma, sorry I'm late". Emma says "Oh, that's all right, the food is still hot. Here, let me take your coat. You look tired". John says "I am. These meetings every night are beginning to get me down. So, do you know what I've been thinking? Maybe we ought to get away for a little vacation when these meetings are over". Emma says "Oh, that sounds wonderful. Would this be another business trip?" John says "Oh, no, Emma, just the two of us". Emma says "Oh, wonderful". She suddenly remembers something and says "Oh my goodness". John asks "What's the matter?" Emma says "That man who called while you were out last night, you know, the Connecticut call". John says "Oh, Mr. Parker". Emma says "Yes, I forgot all about him. He came here about an hour ago and he's waiting for you in the den". John says "Parker, I can't seem to place him". Emma says "He said he's an old friend".  John says "Well, I'll go see him. I'll be back in a minute". John walks into the den and says "Hello". Mr. Parker says "Hello, John. I'm Leonard Parker. Remember me?" John says "Well, I don't mean to be rude Mr. Parker, but, I'm afraid I don't". Parker says "And after all we went through". John says "Mr. Parker, you're obviously enjoying this, but I afraid I'll have to be getting back to my dinner". Parker says "Hey, wait a minute. You aren't very hospitable to an old bunk mate after 21 years". John says "Oh, I remember now". Parker says "You don't seem very happy to see me". John asks "Why did you come here?" Parker says "Take it easy, John, I didn't come here to blow any whistles". John says "I wouldn't if I were you. When I escaped from that road gang, you were with me, remember?"