The Mysteries of Pendowar Hall by Syrie James

She vowed to solve a murder.
Now she’s in danger of losing her heart … and her very life.

Diana Taylor, a bright and spirited governess who has sworn off love, is sent to Pendowar Hall in Cornwall to honor a pledge. She vows to teach her godmother’s niece and to find out who was behind the suspicious death of the former baronet. But her new charge is also a mystery, as is the man who inherited the ancient coastal estate—the charismatic but brooding Royal Navy Captain William Fallbrook, who is home on leave to recover from an injury.
As Diana investigates, her feelings for the enigmatic Captain Fallbrook blossom, and her guard goes up. Pendowar Hall is brimming with secrets as well as a frightening legend about a Mermaid’s Curse. What is behind the mysterious footsteps in the night? Is there more to the story of the tragic deaths of the former baronet’s wife and son? What secrets is Captain Fallbrook hiding? Can she trust the man who has stolen her heart?