A Fakenham couple awoke to find an intruder in their home at North Park.
They heard the front door opening some time between 3am and 3.20am on Thursday morning.
The intruder walked through the lounge and opened their bedroom door, but escaped empty handed when challenged.
Contact DC Trish Hooper at King's Lynn CID on 0845 456 4567 or Crimestoppers anonymously on 0800 555 111 with any information.
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