I'm currently reading A Murderous Marriage by Alyssa Maxwell. This book is the fourth in the Lady and Lady's Maid Mystery series and will be released January 29, 2019.
A wedding should be a happy event, but that's not the case in the Isle of Wight. Everyone knows it's not a love match between Lady Julia Renshaw and the viscount forty years her senior. Despite her sisters protestations that she can and should walk away,
Julia marries Gil Townsend to ensure the coffers of the family home are
full. The nuptials seem a hasty occasion with the reception on board the yacht named after the groom's first wife. An overly familiar secretary, an angry sister of the groom, a concerned best man, and unpleasant weather add to the dismal affair. When the groom goes missing the following morning and is soon found drowned, suspicions fall on the new bride. When her sister, Julia, is taken to the police station, Phoebe knows she can't just stand idly by. It's up to Lady Phoebe Renshaw and her lady's maid, Eva, to prove Julia's innocence and find the real murderer.