To Kill a Mockingbird - watch online: stream, buy or rent
Currently you are able to watch "To Kill a Mockingbird" streaming on Beamafilm. It is also possible to buy "To Kill a Mockingbird" on Microsoft Store, Fetch TV, Apple TV as download or rent it on Microsoft Store, Beamafilm, Apple TV online.
You can also stream the title for free on Beamafilm.