Serialas pasakoja apie buvusį jūrų pėstininką Danielių, gimusį ir augusį Los Andžele. Jam tenka blaškytis tarp ištikimybės bendruomenei ir pareigos jausmo savo kolegoms pareigūnams, po to kai jam pavedama vadovauti specialiųjų ginklų ir taktikos padaliniui, kuris yra paskutinė stotelė nusikaltimams spręsti Los Andžele.
Der Kriminalist is a German television series produced by Monaco Film Hamburg, subsidiary of Odeon Film.
Directors during the first season were Sherry Hormann and Torsten C. Fischer, during the second: Thomas Jahn, Jobst Oetzmann and Torsten C. Fischer.
Two police officers, the older Lt. Stone and the young upstart Inspector Keller, investigate murders and other serious crimes in San Francisco. Stone would become a second father to Keller as he learned the rigors and procedures of detective work.