Serial

14 clues
Number
___ soap
Episodic
Soap opera
Sequential
TV show type
Kind of number
Kind of killer
Daytime showing
Soap opera, e.g.
Forming a series
It's a long story
Soap opera, for one
It's one thing after another
Similar answers:
Abaser
Abasers
Abaserunner
Abbatial
Abstruser
Abuser
Abusers
Accessorial
Accuser
Accusers
Activeservice
Actuarial
Actuarialtables
Addresser
Addressers
Addserialcables
Adisserctroilus
Adjustdesserts
Adrillsergeants
Adverbial