NCIS S01E14:

The Good Samaritan

IMDb 7.9 60 min/episodeRelease:2003
A Navy dentist from a Naval air station dies of a single shot to his back, apparently in an execution-style murder; the NCIS investigates. Two more men from the same Naval air station soon die identically. Gibbs and company figure it out.
Director: Alan J. Levi