The series is currently structured as a trilogy (or more) focusing on different "difficult" men:

A un lord despiadado no se le puede enamorar (The Ruthless Lord).

As the first entry in the Los Birdwhistle series , the book establishes the dynamics of the Birdwhistle family, a group that readers follow across subsequent installments like A un lord despiadado no se le puede enamorar . Series Overview