Graveyard Shift Ghost Tours: Oct. 13, 18-20, 25-27, Mark Twain House and Museum, Hartford. Filled with haunted history, dark tales, and Victorian traditions surrounding seances and spiritualism. Participants will hear lots of creepy tales and learn about Mark Twain’s interest in the supernatural. Tours run at 6, 7, 8 and 9 p.m. $25 adults; $17 children ages 10 to 16. This tour is not suitable for children under 10. Members: $20. Reservations: 860-247-0998.