Both are thrillers with a serial killer who looks charismatic chasing after a helpless girl. Both leads do some smart and some dumb actions. I would say the lead in Midnight might be smarter and the thrill is also more.
The female leads in both are the targets of serial killers who treat them as their prey as they slowly ingratiate themselves into their lives in sinister ways . The dynamics of the relationships the killers have with the female leads in these shows go in different directions but the the core stories are the same. Both shows tackle how technology and social media in the hands of psychopaths can be used as a tool to lure and harm women.