Other than that Officer Finley serves on the police force for the Los Angeles Police Department, nothing is known about Finley's life before the apocalypse.
Officer Finley is stationed at the Paul R. Williams High School on guard duty alongside Officer Richards, first seen when Principal Art Costa questions a bus driver outside the school on the number of students arriving at school due to an unknown virus spreading. He is then later seen assisting the dismissal of students from the school.
As the city of Los Angeles quickly fell to the undead, Officer Finley's fate remains unclear. It is unknown whether he was able to survive the outbreak or was killed and/or turned into a zombie.