Possible Clues:

• You won't remember suffering from it
• 'The Bourne Identity' plot device
• I can't remember working men in Asia
• Soap opera plot staple
• "The Bourne Identity" malady
• Knock on the head result, in movies
• Seaman I found with loss of memory
• More than forgetfulness
• 1-Across plot staple
• Memory-loss