Theories of Magic and Mind (слэш)

“Pensieves are subjective, just like memories are,” Remus continued. “So I can’t just—pull out memories of Hogwarts and play them like films for you to show you exactly what happened. A lot of it is sort of fuzzy and fragmented and it’s not a reliable record of events. But I thought it might be helpful.”
Sirius considered the fact that circumspect, reserved Remus Lupin was offering to crack open his mind and let Sirius inside. “All right then.”
Memory magic, across three eras.