And finding the first actual record of the relationship between your grandparents, a postcard that is otherwise completely unmarkable except in its number of stamps.

"Sorry," Lily says, from the doorway. "That took a bit longer than I thought it would.

"Tea?" she adds, holding one of the mugs out to him.

If she's aware that he's been reading her mail (more or less), she doesn't seem bothered by the fact.