(~s)
1.
A ~ is a story which is broadcast on television or radio or is published in a magazine or newspaper in a number of parts over a period of time.
...one of BBC television’s most popular ~s, Eastenders...
Maupin’s novels have all appeared originally as ~s.
N-COUNT
2.
Serial killings or attacks are a series of killings or attacks committed by the same person. This person is known as a ~ killer or attacker.
The ~ killer claimed to have killed 400 people.
ADJ: ADJ n