Possible Clues:

• Drunk, pa's despair vanishes
• Responds to a magician, maybe
• One adult held by military engineers after old penny vanishes
• Vanishes
• Harry said soft fruit goes off
• Despair as novel about Portugal vanishes
• Retreats as a spider moves around quietly
• I'd returned with juice before fruit goes off
• Page inserted in Paradise Lost -- second goes missing
• Regularly find rising juice before fruit goes off