"in serial" can be used in written English
It is often used to refer to a set of objects that are assembled in a specific order. For example, "The books were lined up in serial on the shelves."
Yessir, we're in serial killer territory here.
"It's like telling a story in serial," he said.
Gramm is a forensic psychiatrist, who majors in serial killers.
Argentina, by contrast, engages in serial, self-inflicted economic upheaval.
P25 Discovery documentary to investigate murder featured in Serial podcast.
As a result, we have an increase in serial murder".
Indulging in serial spas isn't often financially realistic.
Others have been arrested recently in serial bank robberies: 12 robberies here, 14 there.
Then, in serial tweets, Trump blasted the unfair hit-jobs, reclaiming the headlines.
The Copland composition was an exercise in serial technique such as is nowadays becoming pretty academic.
Dickens was busy writing a novel, Martin Chuzzlewit, which was not selling well in serial form.
