Introducing his new movie, Mr. Holmes, at MoMa in which he plays Sherlock Holmes as you have never seen him, Ian McKellan called this the “quintessential” British story, as told by Americans: Jeffrey Hatcher’s screenplay from Mitch Cullin’s A Slight Trick of the Mind, and directed by Bill Condon. “The British never had a chance.” Fortunately, Americans are just as intrigued by Sherlock Holmes! With Laura Linney, deglamorized to play a frumpy housekeeper Mrs. Munro, and Hiroyuki Sanada as a revenge-bound son, the movie is as British as a crumpet. The fine ensemble swirling around McKellan’s killer performance as the aging Mr. Holmes, now in retirement in the country, is first rate. And in that spirit, the movie’s Monday premiere took advantage of Broadway’s dark night, with theater actors out for drinks and ravioli at Southgate in celebration.