BESTSELLING author Chris Ryan will be signing copies at the Asda supermarket in West Swindon.
The novel entitled the Increment, is about a secret SAS assassination squad that starts killing ex-soldiers.
The writer will be in the store between 6pm and 7pm on Friday, June 11.
On Saturday, June 12, the store is hosting a football skills demonstration.
Proceeds will help the Abbey Meads Football Club buy new equipment.
There will also be a barbecue and clowns.
As well as collecting money for the football team, some of the proceeds will go to the Swindon Cancer Appeal which is aiming to raise £600,000 for Macmillan nurses.
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