Who is Detective Markowitz from The Other Side of Dark and what is their importance?

Detective Markowitz questions Stacy after Brandi Mayer's article reports that Stacy can identify her mother's killer. Markowitz is patient with Stacy, as he tries to help her remember who shot her. He also provides an explanation for how the proceedings will transpire after Jarrod's arrest. He asks Jeff to look after Stacy when he begins to fear for her safety.