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Chief Gary Mercer is a fictional character portrayed by Chris McGarry in the TV series Chicago Fire.
In the first episode they appeared in, titled A Couple Hundred Degrees (season 9), they were 54 years old.
They appear in 1 episodes out of a total of 252 aired so far

Chief Gary Mercer

by Chris McGarry

character

Episodes1

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    A Couple Hundred Degrees
    episode S9.E11 april 2021
    A new recruit with ties to the CFD tests Serveride's patience. Violet receives a mysterious note that sends her and Brett on a hunt for the person who wrote it.