Possible Clues:

• Lets get confused, just in case
• *Whom Holmes tells 'You do find it very hard to tackle the facts'
• 'Take heed ___ any man deceive you': Mark 13:5
• Cautionary conjunction
• In the event
• For fear that this might be the French saint
• ''--- darkness come upon you'' (John 12:35)
• Avoiding the risk that
• ''___ we forget'' (Kipling line)
• To avoid the risk that - let's do it