Considering Adrian's doctor knows about his "real medicine" there's absolutely no way that his father doesn't know something is up, no matter how hard he tries to deny his wife
Now what are his intentions... he definitely doesn't want his son to die he still needs his heir. He's probably gonna make Hilda do more dirty work
![pepehmm :pepehmm: :pepehmm:](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)