Enzian and Annie Russell Theatre showcase another season of National Theatre Live to play thee popular London products: “Frankenstein,” starring Benedict Cumberbatch and Jonny Lee Miller; “King Lear,” starring Sir Ian McKellen; and “The Madness of George III,” starring Mark Gatiss. Tickets cost $20 for the general public and $17.50 for Enzian Members for each show. A season pass to all four performances costs $49.50 per person.