Nightwalker
According to Craig Martelle's afterword to the first book in the series, Frank Roderus "had written three and half short books [in the series]" before his death. Martelle "was able to finish the fourth book, which doesn't complete the story arc."
Titles (5)
| # | Title | Author(s) | Year | Type |
|---|---|---|---|---|
| 1 | Nightwalker | Frank Roderus & Craig Martelle | 2019 | |
| 2 | Nightwalker Book Two | Frank Roderus & Craig Martelle | 2019 | |
| 3 | Nightwalker Book Three | Frank Roderus & Craig Martelle | 2019 | |
| 4 | Nightwalker Book Four | Frank Roderus & Craig Martelle | 2019 | |
| The Nightwalker Complete 8-Book Omnibus | Frank Roderus & Craig Martelle | 2020 | Omnibus |