"One afternoon last October, on the concrete of her patio garden, my mother had a fall...That was the last time I really had any options." Reclusive photographer Rob Fossick has come adrift both from society and his creative urge. But when his mother dies, Rob is suddenly presented with an unwanted yet intriguing problem to solve - minutes before her death, he discovers that she was hoping to deliver a package to an enigmatic character called Mr Satoshi, but the name and the contents of the parcel are shrouded in mystery. So begins a quest that takes Rob out of his isolation and plunges him, anxious and unprepared, into the urban maelstrom of Tokyo. With the help of a colourful group of new acquaintances - an octogenarian amateur detective; a beautiful 'love hotel' receptionist; an ex-sumo wrestler obsessed with Dolly Parton - Rob edges closer to uncovering the mystery surrounding Mr Satoshi, and in the process comes face to face with some demons of his own. Combining several interlocking mysteries - both past and present - Who is Mr Satoshi? is a uniquely inventive and unforgettable story of a fragile soul coming to terms with the fact that no one, in the end, is quite who they seem to be.