Related Clues:

• If's partner, in logic
• Thereupon
• "Pardon me, but ..."
• 'And so ...'
• 'I have an idea ...'
• Partner of 59 Across
• '__ what?'
• "___ again ..." ("on the other hand ...")
• 'All righty ___!'
• Two cents' worth, so to speak
• ''If so . . .''
• "After that ..."
• "And ___ what happened?"
• "Here's an idea ..."
• 'Back ___' (2005 song by Mike Jones)