Poison to Purge Melancholy by Elena Santangelo is book 3 of the Pat Montella mystery series, set in contemporary and 1783 Williamsburg VA. Pat spends the Christmas holidays with boyfriend Hugh, his daughter Beth Ann, and all his family (the romance is serious; time to meet family). Although she misses her own family celebrations steeped in Italian traditions, she is fascinated by the colonial traditions Hugh's mother Gladys "Glad" follows. Glad is thrilled to be living in a colonial dwelling, known as "the Carson house". Glad dresses in traditional clothing as Elizabeth Carson would have, and has hyphenated her last name with Carson. Pat immediately senses Glad's house is haunted, and over the course of the holiday she comes to recognize several ghosts are present. Different from her previous experiences with ghosts, these make Pat physically ill - until she touches Hugh or one of his family. She learns from the ghosts of past murders, and also solves the mystery of poisonings (attempted murders) in the present day during the house party.
In 1783 a group of former soldiers perform as masked mummers at their former commander's house. One of their party is shot. He had been suffering from heavy metal poisoning, which induced mental illness. A fellow lodger at the Carson house investigates the shooting, the poisoning, and the property itself, to resolve questions about events that occurred during the war.
Glad prepared her holiday meals using traditional recipes, using ingredients as close as possible to what was available in Williamsburg in colonial days, serving dozens of dishes in several courses. Glad and her significant other Ev dressed in traditional holiday garb and presented the meals with careful precision. All foods were artistically arranged, symmetrically placed on the tables, and served in a series of courses. The family had to leave the room between courses, so the next astonishing course could be laid out in splendor. I enjoyed the detailed descriptions of the lavish colonial meals and the traditional customs more than the parallel mystery plots.