This episode is the first which doesn't feature a teaser at the beginning of the episode. Instead, it shows the "22 years ago" recap and then goes straight into the titles. All other episodes have a short teaser of the current story before the titles.
The trivia items below may give away important plot points.
The murderous Bender family is based on an actual family named Bender that killed visitors to their Kansas hostel in the 1800's. By the time an investigation was launched they had killed 7 men and an 18 month old child. While no one really know what happened to the family, Laura Ingles Wilder wrote about the search in her memoir. She claimed that her father was a member of the posse that formed to find them, and that when he returned home, he appeared rather worse for the wear, suggesting that the family may have been found and killed.