Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | IOU | 2020 | Kristy Marie | Buy |
| 2 | The Pretender | 2020 | Kristy Marie | N/A |
| 3 | The Closer | 2021 | Kristy Marie | Buy |
| 4 | You Owe Me | 2025 | Kristy Marie | Buy |
Kristy Marie’s 21 Rumors series has four books so far, starting with IOU in 2020 and most recently adding You Owe Me in 2025. The first two books, IOU and The Pretender, both came out in 2020, followed by The Closer in 2021. There was then a long gap before the fourth book arrived four years later.
The bookend titles are worth noting: the series opens with IOU and the latest entry is You Owe Me, which suggests these two books are closely connected. With five years between the first and fourth installments, this is a series that has taken its time to develop.