Is Detective Holbrook real A in Pretty Little Liars season 5B?

In "Pretty Little Liars" Season 5B, Detective Holbrook is a real character, portrayed as a detective investigating the mysteries surrounding the Liars. However, he is not A; his character is involved in the overarching plot but does not have the same malevolent intentions as the true identity of A. His role adds complexity to the storyline, as he interacts with both the Liars and the overarching A narrative.