More than £5,000 cash was stolen along with jewellery in four burglaries across Lancashire last month.
Police are appealing for information to help find a man following the incidents on September 14, which are believed to have happened between 8am and 2pm.
The first incident happened at an address on Mains Lane, Poulton-le-Fylde, where cash was stolen.
Next was an address in Knott End, where a pillow case and a safe containing £2,100 was stolen.
Jewellery was then taken from a house in Preesall, and finally at an address in the Marton area of Blackpool, £4,000 and further jewellery was taken.
Enquiries have been ongoing and police believe the offender or offenders may have travelled to Lancashire from the West Midlands.
A police spokesperson said: "It goes without saying but it is simply unacceptable to burgle somebody's home - to invade their space in this way - and leave them feeling vulnerable and frightened in what should be the place they feel safest.
"We are now asking for the public's help identifying the man in the photos as we believe he may be able to help with our enquiries."
Anyone with information should call 101, quoting log 1165 of September 14.
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