Serial (radio and television)
In television and radio programming, a serial has a continuing plot that unfolds in a sequential episode-by-episode fashion. Serials typically follow main story arcs that span entire television seasons or even the full run of the series, which distinguishes them from traditional episodic television that relies on more stand-alone episodes. Worldwide, the soap opera is the most prominent form of serial dramatic programming.
Historical period drama
The term historical period drama (also historical drama, period drama, costume drama, and period piece) refers to a work set in a past time period, usually used in the context of film and television. It is an informal crossover term that can apply to several genres and is often heard in the context of historical fiction and romances, adventure films, and swashbucklers. A period piece may be set in a vague or general era such as the Middle Ages or a specific period such as the Roaring Twenties. A religious work can qualify as period drama but not as historical drama.