The summer house

"In the small inlaid wooden box, Matt's mother had kept all his childhood memories. Amongst them are many photos of Matt as a child, growing up. But something about the photos has always puzzled Matt - was that really him? Why did he not remember those clothes? The toys? And where, in the photos, was his sister Imogen? He has a strange unresolved feeling that there is something missing in his life. Imogen is living with her husband, a country vet...