A Highland Romance (Markson Regency Mystery #5)
Lindsay Downs, Heidi Sieverding

They are about to start hunting this person down they have an unexpected visitor. Someone they’d met several months before while trying to prove Lady Markson’s brother innocent of murder. Mr. William Atkinson. Once he informs the Markson’s of Toby Underwood’s true identity they set out to being him to the castle. There he meets Rose, his daughter he never knew he had.
As plans go forward to reward Toby of his service to the Crown the true killer kidnaps Rose. Rescued she marries the love her life, Keith Moore with the newest viscount looking on.
After the ceremony Lord and Lady Markson return to the castle. They are met by her brother with an ominous message.