Burglars threatened a woman with a knife in her own home in Keelby Road, Gainsborough.
Police are now hunting two men who entered the house between 2.30am and 3am on Friday 14th June.
The intruders were disturbed by the occupants who arrived home to find them inside, before they threatened the woman with a knife.
The pair took a Nokia mobile phone, a Nintendo DS and a purse from the property.
The offenders are described as white, in their 20s, 6ft tall, of medium build and were wearing hooded tops.
They fled the scene on foot along Glentham Road.
Anyone with information should call Lincolnshire Police on 101 with incident reference number 38 of the 14th June.