This context comes from the movie "The Glass Onion" (Don't worry No-Spoilers)
Will you please then explain it all to us? Detective?
No. I can peel back the layers, I can take it to a point. But what lies at the center... only one person can tell us who killed .....
Blanc's using an onion as a metaphor for the mystery that is taking place in the movie. I understand that you can peel back the layers. But what does "take it to a point: mean?
- to remove: to take a coat from the closet.(Random House Kernerman Webster's College Dictionary)