Reading order
| # | Title | Published | Author | Buy on Amazon |
|---|---|---|---|---|
| 1 | Cold Case Kidnapping | 2023 | Nicole Helm | Buy |
| 2 | Cold Case Identity | 2024 | Nicole Helm | Buy |
| 3 | Cold Case Investigation | 2024 | Nicole Helm | Buy |
| 4 | Cold Case Scandal | 2024 | Nicole Helm | Buy |
| 5 | Cold Case Protection | 2024 | Nicole Helm | Buy |
| 6 | Cold Case Discovery | 2025 | Nicole Helm | Buy |
| 7 | Cold Case Murder Mystery | 2025 | Nicole Helm | Buy |
Hudson Sibling Solutions is a seven-book romantic suspense series by Nicole Helm, published between 2023 and 2025. Each book follows a different Hudson sibling investigating an unsolved case. Cold Case Kidnapping opens the series, followed by Cold Case Identity, Cold Case Investigation, Cold Case Scandal, Cold Case Protection, Cold Case Discovery, and Cold Case Murder Mystery.
The cold case format gives each book a distinct mystery to solve while the sibling structure connects the series. It is one of Helm’s longer-running romantic suspense series.