What to stream: ‘Mank’ and ‘Selena’ on Netflix, ‘Sound of Metal’ on Amazon, ‘The Hardy Boys’ on Hulu

Here’s what’s new and ready to stream now on Netflix, Amazon Prime, Hulu, HBO Now, video-on-demand, and other streaming services …   Gary Oldman stars as the colorful, alcoholic cowriter of “Citizen Kane” in “Mank” (2020, R), directed by David Fincher from his father’s screenplay. Fincher spent decades trying to get the film produced before […]