Murder on Highland Street (A Vivian Ace Mystery)

July 1924 Vivian Ace just returned from a four year trip in Europe to escape from her taunting memories but when she returns to the small town of Ravenwood a mysterious murder greets her. On Highland Street the Day's home is nothing but rubble from a terrible fire and just last night the Day's were hosting a large party but now most of the guests are dead. All that is left from the party is a simple note Dear party goers here's a N?siop cake made especially with love. May the night burn bright. Sincerely your son. Just a couple days later another person is murdered on Highland Street. Who is Son? What's N?siop? Can Vivian Ace find the murderer before they strike again?