Nicholas Hoult portrays the central vampire, "Renfield," whose duties involve attending to his ailing master—Nicolas Cage—a vampire experiencing some health problems. He’s growing weary of the constant demands placed upon him, particularly because obtaining sustenance for his superior is increasingly challenging; he even has to resort to eating insects, which briefly grant him enhanced strength. Simultaneously, a tenacious police officer named "Quincy," played by Awkwafina, is attempting to bring down "Teddy Lobo" (Ben Schwartz), whose mother, "Bella" (Shohreh Aghdashloo), leads the city's most formidable drug-dealing organization and has seemingly corrupted numerous officials. A chance encounter occurs when Renfield meets this officer in a diner, and following a spirited confrontation, they discover a shared resolve to accomplish their respective objectives. The narrative is rather superficial, bringing to mind an episode of "Buffy." What elevates the experience somewhat are the performances. Hoult seems to be genuinely enjoying himself with his insect-based diet and acrobatic sequences. Cage embraces the over-the-top nature of his role, occasionally evoking Sir Anthony Hopkins’ portrayal of “Hannibal Lecter” more than anything Christopher Lee ever delivered. I went to see this film alone last night, which felt a little disheartening—it's not a particularly strong movie, but it offers some mild amusement as a parody of the genre (and contemporary attempts at film noir). Despite being instantly forgettable, it’s still well-produced and passably entertaining as a gory spectacle.

Source on TMDB