4 of the twenty-eight
Second chance
What it is
They were together before. One of them left, and the reunion is a professional obligation rather than a coincidence.
How these do it
These are the books that do not end on a ring. Coming back is the floor and not the ceiling, and the heroine is often still angry on the last page. The card says so before you buy.
The 4 that deliver it.

Hartwell Group · Book 5
School Gate
Second Chance · HFN · 118 pp
$14.00Read chapter one free
Fenwick Pike · Book 5
Recall Notice
Second Chance · HFN · 118 pp
$14.00Read chapter one free
Dry Line · Book 5
After Action
Second Chance · HFN · 144 pp
$14.00Read chapter one free
Blue Ticket · Book 5
Irregular
Second Chance · HFN · 120 pp
$14.00Read chapter one free
Other tropes