Na Je-hee is the head of NT Life Insurance's investigation team and a friend of Koo. They are former colleague from police.
Appearances
Inspector Koo
Main cast, played by Kwak Sun Young
- Episode 1x01: Episode 1 (Oct 30, 2021)
- Episode 1x02: Episode 2 (Oct 31, 2021)
- Episode 1x03: Episode 3 (Nov 6, 2021)
- Episode 1x04: Episode 4 (Nov 7, 2021)
- Episode 1x05: Episode 5 (Nov 13, 2021)
- Episode 1x06: Episode 6 (Nov 14, 2021)
- Episode 1x07: Episode 7 (Nov 20, 2021)
- Episode 1x08: Episode 8 (Nov 21, 2021)
- Episode 1x09: Episode 9 (Dec 4, 2021)
- Episode 1x10: Episode 10 (Dec 5, 2021)
- Episode 1x11: Episode 11 (Dec 11, 2021)
- Episode 1x12: Episode 12 (Dec 12, 2021)