The term 'SERIES BEGINNING' can refer to the first installment of a television series, book series, or movie franchise. The crossword solutions ALPHA (5 letters), EPENER (6 letters), and EPISODEI (8 letters) could be referring to the first entries in these types of series. Alpha could refer to the first letter of the Greek alphabet, which is often used to label the first installment of a series. EPENER could be a reference to the first episode of a television series, while EPISODEI could be a reference to the first installment of a movie franchise.