As the series begins, Derrick has only recently been promoted from
Hauptinspektor to
Oberinspektor. The personal relationship between Derrick and his assistant, Klein, is characterized by Derrick's frequent annoyance over Klein, which takes its form as sarcastic remarks to the point of rolling his eyes and shaking his head over his companion in front of witnesses and in public. The reason for this animosity remains unclear, since Klein rarely makes any mistakes, yet Derrick seems to pick at him quite regularly. Klein, though, never talks back and also never gives the slightest appearance of taking offense at this low-level bullying. These many minor episodes notwithstanding, the two work very professionally and organically as a team, but with Derrick always as the leading partner. This behavior of Derrick's becomes less noticeable as the seasons progress. Derrick hardly has any private life; a girlfriend occurs only in two episodes. In one episode, Derrick says, "no, I am no longer married"; Klein, however, does not seem to have any private life; as a younger inspector, he seems to love getting statements from young, good-looking girls. In that respect and also in the way he goes about a case, Derrick resembles
Lt. Columbo. As
Umberto Eco has pointed out, though, Columbo is the obedient public servant of rich and powerful Californians (even as he relentlessly, remorselessly, and successfully pursues those engaged in wrongdoing, particularly murder) while Derrick, elegantly dressed and impeccably behaved, always appears in control, and is superior even to the wealthy people he is tracking down. Just like an earlier television series,
Der Kommissar (also written by Reinecker),
Derrick features many prominent German and Austrian actors and actresses (including a few expatriates), such as
Lilli Palmer,
Armin Mueller-Stahl,
Klaus Maria Brandauer,
Maria Schell,
Horst Buchholz,
Curd Jürgens,
Christine Kaufmann,
Brigitte Mira,
Gottfried John,
Sybil Danning,
Reinhard Kolldehoff,
Carl Möhner,
Eric Pohlmann,
Anton Diffring,
Ursula Buchfellner and
Christoph Waltz. Many appeared repeatedly in different roles throughout several of the seasons. As one of the first Western TV series shown on the screen of Chinese televisions after the country opened its gate to outside world in 1980s, the series (as "Detective Derek" – 《探长德里克》) was popular in
China. Reportedly, it was also actually used to teach police officers and inspectors in proper procedure of tracing and solving criminal cases.
Derrick reached cult status in Australia, where it screened on SBS Television with English subtitles.
"Harry, hol schon mal den Wagen" The famous phrase
"Harry, hol schon mal den Wagen" ("Harry, bring the car 'round"; implying "we're done here") was attributed to Derrick and became part of popular culture in Germany and China as catch phrases. Actually, this phrase was never spoken in any of the 281 episodes; however, in the second episode of the series, "Johanna" (which premiered on 3 November 1974), Derrick orders Klein "Harry! Wir brauchen den Wagen sofort!" ("Harry! We need the car immediately!"). The exact same phrase was used by
Erik Ode in the earlier TV series
Der Kommissar, where Fritz Wepper already played the character named Harry Klein, then the assistant to a different police inspector (played by Ode). How exactly this phrase became attributed to Derrick is unknown, but one theory is that since
Der Kommissar and
Derrick were both created and written by screenwriter Herbert Reinecker, a TV critic may have attributed this phrase to the wrong one of Reinecker's series, after which it entered German popular culture as a catch phrase for Derrick. Horst Tappert did, however, speak this phrase in character as Stephan Derrick was as voice actor of his animated self in the 2004 animated feature film
Derrick – die Pflicht ruft (
Derrick – Duty calls; see "
Beam me up, Scotty" for a catchphrase with a similar background). This animated film shed some satirical light on the ever-serious and sombre world of the original series, making fun of numerous clichés attributed to the series, including Harry's rumoured envy over Derrick standing in the spotlight, while he, Derrick's assistant for 25 years, always stood behind his boss. ==International popularity==