Murder on Teramachi Street: The Kyoto Teramachi Mystery Series: The K - Paperback

Keiko Hattori is the owner of a small restaurant in Kyoto. She's proud to live on a traditional street and knows her neighbors quite well. Recently more and more foreign visitors are coming to Kyoto and some of them patronize her restaurant.

One morning two of her patrons stroll down to the used bookstore and discover that it has yet to open. They can hear a cat yowling loudly. Concerned, they ask Keiko if she knows the owner, who lives above the shop. She does and she even has a key.

She opens the door and reluctantly climbs the stairs only to find the owner, Mr. Tanaka lying dead on the tatami mat. She assumes it is a heart attack, but when the police investigate, they find poison in one of two teacups. Who would want to kill an old man? Granted he himself is not a native of Kyoto and he isn't the friendliest, but what would the motive be?