Possible Clues:

• Crime with collusion that leads to prison work
• Latest book about party employee's crime?
• What a lack of evidence of forced entry might indicate
• Kind of crime
• Office work, in police terminology?
• Patience found here, perhaps, in work of fifth column ...
• It involves an accomplice with access
• Type of crime committed by a prisoner?
• Perfidious crime, as air conditioning is for Jacob?
• Undercover work?