5 books in series

Underwater Investigation Unit

Underwater Investigation Unit is a 5-book series with 5 released primary works first released in 2020 with contributions by Andrew Mayne.

#1
The Girl Beneath the Sea

#1 of 5 in Underwater Investigation Unit

2020 • 63 Readers • 328 pages • 3.9

#2
Black Coral

#2 of 5 in Underwater Investigation Unit

2021 • 22 Readers • 320 pages • 3.9

#3
Sea Storm

#3 of 5 in Underwater Investigation Unit

2022 • 17 Readers • 302 pages • 3.8

#4
Sea Castle

#4 of 5 in Underwater Investigation Unit

2023 • 11 Readers • 316 pages • 3.3

#5
Dark Dive

#5 of 5 in Underwater Investigation Unit

2024 • 8 Readers • 3.5