Death on Demand (Carolyn Hart)

This light mystery is set in a bookstore on an island, and the central murder takes place in a mystery book store at a gathering of local mystery writers. It is a classic locked-room murder: the lights go out, and when they come back on one is dead and all the rest are suspects. There is no shortage of motives, but the local police single out the main character as their primary suspect, so she naturally must go about solving the crime herself, with her convenient love interest. I didn't find the plot convincing or the characters especially engaging, and don't feel that the final reveal had been established well enough, but it was still pleasant to read. I probably won't look for more in the series, though.