Per the official character description, Frank — who’s the uncle of Benjamin McKenzie’s fatherless Jim — “is a master at playing both sides and a man who knows how to keep a secret. Frank abandoned the family after Jim’s father’s fatal car crash and now, 25 years later, he’s returned to reconnect with his estranged nephew. But Frank harbors a dark secret, one that will upset the very foundations of Jim’s world and force him into a terrible choice between saving his family and saving his city.”
In addition to Dexter, Remar’s TV credits include arcs on ABC’s Grey’s Anatomy and FX’s Wilfred. He’ll also be seen in the upcoming second season of Hulu’s The Path.
His recurring Gotham stint is slated to kick off in early 2017; the Fox drama’s fall finale airs Nov. 28.