Detect Thoughts: Does the target know the identity of the caster as a result of the save?

@JeremyECrawford Detect Thoughts: Does the target know the identity of the caster as a result of the save or just that the probing occurred?

— Ian (@CuttableSoup) October 28, 2016

If you didn't witness the casting of a spell, you don't know who cast it, unless a spell or other feature says you do. #DnD https://t.co/qzMHqX1jxj

— Jeremy Crawford (@JeremyECrawford) October 28, 2016