Related Clues:

• That time
• '___ bitten ...'
• Storybook starter
• '___ upon a time'
• Almost never?
• ___ upon a time
• Popular story start
• Immediately, after 'at'
• Fairy tale word
• Some years back
• Closer to the beginning of time
• ''And --- There Were None''
• ''--- bitten, twice shy''
• Never again?
• Yarn opener