I figure I'll poke around here a bit. Jeff Shred the letter. Walk fast, play it safe, talk to no one, blend in, don't use so much English, don't pull out a map in front of people, don't talk to the girl at the table next to yours. You are incognito, you are escaped. By now Rick has almost certainly hired a private detective to escort you home.
Caution is paramount.
At dusk sit in a quiet churchyard and try a postcard. They used to cram five or six prisoners into a room the size of a phone booth. They also had cells where the prisoners had to stand for days in three inches of water with no place to sit or lie down. They'd knot them behind your back. Jeff Tear up the postcard.