Isaac's portrayal is really good. I would never have guessed someone could nail the part. But don't say it is true if it isn't. His brother died before he was born. Made it look like Mae West movie was his first and so on. Stick to the facts so we all won't doubt the movie.
Any huge fan of Cary Grant will enjoy this and I did get entertained. The implied part of his Randolph Scott relationship is movie time crap. Jennifer Grant always claimed he wasn't gay. She knew him better than anyone. Read her book Good Stuff.
Also, what an inappropriate song to play when portraying New York. Movie looked so timely but failed there.
Look up the only photo I could find of his father, he was spot on.
Cary/Archie would be disappointed and disgusted.