Detectives are hunting a woman who attempting to trick shopkeepers in St Helens into giving her too much change.
Police believe the brazen thief struck at SIX different locations during one day but canny shop workers foiled her on all but one occasion.
The incidents all took place on Sunday, February 15 at:
* Co-operative stores on Fleet Lane, Ashtons Greens Drive and Peckers Hill Road
* The McDonalds Restaurant off the St Helens Linkway
* A BP Garage on St Helens Linkway
* A Martins general store on Ashtons Green Drive
On each occasion, the women entered the shop and asked to buy a low value item.
She then asked to change a note but once the cash had been handed over she claimed to have given staff a note of a higher value.
Police say she successfully tricked staff at the Fleet Lane Co-op store but was turned away at the other locations.
Officers believe the same offender also failed to pay for a taxi fare on the same day in Newton-le-Willows.
Det Insp Paul Unsworth, St Helens CID, said: “We take any crime committed in St Helens extremely seriously and we are continuing to carry out inquiries to bring the person responsible for this series of incidents to justice.
“We believe there may have been a number of similar incidents across St Helens and Knowsley in the last few weeks and I would urge businesses to be on their guard for scams such as this and to contact us if they think they may have been victims.
“I can reassure people we are determined to crackdown on all forms of crime affecting retail businesses and as part of the investigation into these incidents we have issued CCTV images of a woman who we believe may have important information which could help us with our inquiries.
“I would appeal to her, or anyone who recognises her, to get in touch with us as soon as possible.”
Anyone with information should contact police in St Helens on 0151 777 6065 or via the 101 number quoting reference 0515031046.