Possible Clues:

• Eliminate errors
• Terrorists certain police officers are sent back to get rid of
• Time to lay down the law heartlessly, and carry out a purge
• Exterminate, extinguish
• After a time it gets iced at last, so remove it
• Expunge historical period — rule as despot, heartlessly
• Trace idea for cheating Excise
• to remove it , time ate about the CID up in there
• Time demand, with no time to waste
• Ecstasy and speed? Swallowing flipping LSD, get weed out