5. Castle
Duration: 2009 – 2016 | 8 seasons
In Castle, the successful author Richard Castle, played by Nathan Fillion, gets to work with the NYPD because a serial killer is imitating his books. The collaboration is supposed to help him with new novels. He is particularly taken by Kate Beckett, played by Stana Katic.
There is a strong focus on the relationship between the charismatic Castle and his partner at the NYPD. Nathan Fillion, in particular, is a major highlight and resembles the charming DiNozzo from NCIS. On IMDb, the series holds a score of 8.1 out of 10 with approximately 175,000 ratings.
6. J.A.G – In the Service of Honor
Duration: 1995 – 2005 | 7 seasons
J.A.G – In the Service of Honor is basically a predecessor to what NCIS later did. You follow Harmon Rabb, who serves as a lawyer for legal cases of the US Navy. He has a team of other military lawyers.
Harmon Rabb, played by David James Elliott, was a Navy pilot before his legal career but had to change his job. The series was nominated multiple times for a Primetime Emmy and won it three times. On IMDb, the series has a score of 6.7 out of 10 stars from over 20,000 ratings.
