The Targeted Hearts Duet reaches its second book in this volume.
Everything here starts in the immediate aftermath of Book 1, carrying forward from those events without a break.
Major turns from the opening book are revealed in these pages, so reading out of order will spoil that earlier story.
The duet is meant to be followed from the beginning rather than entered at this later point.
Start with Book 1 if you want the strongest and clearest experience of what follows.