VICIOUS tells the story of partners Freddie (Sir Ian McKellen) and Stuart (Sir Derek Jacobi), two men who have lived together in a small central London flat for nearly 50 years. Constantly picking each other apart and holding onto petty slights for decades, we can still see underneath all their vicious codependent fighting they have a deep love for each other. Into their world steps a young man, Ash (Iwan Rheon), as their new upstairs neighbor. Joining Freddie and Stuart is feisty best friend Violet (Frances de la Tour), young at heart and with a deliciously dry sense of humor, and completing the entourage are old friends Penelope (Marcia Warren) and Mason (Philip Voss).