stepping on his grave

a phrase meaning "not letting someone rest"

this phrase is used when people are not letting go of a dead person, whether fictional or not
by "stepping on his grave" you keep believing that there is hope or you keep speaking of them, do not step on someone's grave, let them go.

"in season 5 of stranger things eddie munson might be kaz!! He could be a vampire!"

"oh my god. let the guy rest, you're stepping on his grave"