Wok N Roll has a Chinese restaurant and a used-record-store side entrance. The distinction is useful to anyone arriving with an order in mind.

Wong Wei runs the business. Her brother Wong uses the place as a home base, which means an ordinary visit can put food, music and an investigation in the same conversation.

The two entrances offer different reasons to come in. Gai’s confidence supplies another reason to remain long enough to hear what he is investigating.

For readers following the recent church-donation inquiry, it is worth remembering that a boombox is an investigative device only in certain hands. Used records remain used records.