Obsession - Mockingbird Square Series 2, #4

In the final Mockingbird Square Series Two, Toby and Deb have their happy ending. Lady Deborah Lorimer, matchmaker of Mockingbird Square, has loved Tobias Miles forever. Toby is oblivious to her feelings, although he knows he and Deb are good friends. Best friends. Then when his 'perfect match' falls in love with someone else, he has a moment of clarity. It is Deb he loves and he wants to marry her. But Deb has been called home to Derbyshire, where her obnoxious brother Lancaster has announced his engagement to the wealthy Amy Blackwood.
Toby decides the only thing to do is follow her and propose. And so begins a comedy of missed opportunities. Luckily Toby has brought his troublesome younger brother Harrison along with him, and Harrison turns out to be a master schemer. Everything should work out, as long as Harrison doesn't fall in love with Amy Blackwood, and run off with her.