Jack Mulhern. Actor: The Society. Jack Mulhern is an actor known for his roles as 'Dylan Hinchey' in the HBO Miniseries MARE OF EASTTOWN and as 'Grizz' in THE SOCIETY for Netflix. He will next be seen in the feature film THE BOYS IN THE BOAT, directed by George Clooney and the PET SEMATARY PREQUEL for Paramount Plus. Jack is represented by The Gersh Agency, The Burstein Company, and Rebecca...