From NetFlix:

When Arthur Winslow’s (Nigel Hawthorne) 14-year-old son (Guy Edwards) is expelled from the Royal Naval College for stealing, he launches a long and costly effort to clear the boy’s name. But in the process, the determined father may destroy his family. With clever dialogue, director David Mamet’s drama — based on a play by Terence Rattigan — makes strong statements about the relative virtue of right and wrong when appearances mean everything.

NetFlix fails to mention other actors such as Jeremy Northam and Rebecca Pidgeon (who had 2 children with the playwright David Mamet).

This movie is not only engaging, but visually it is wonderful to watch.
This is a feel-good for everyone.