Does True Sight detect a hidden rogue?

@JeremyECrawford does True Sight detect a hidden rogue, or is perception still required to see him/her? #dnd #5E — Charles Horikami (@CharlesHorikami) October 11, 2016 Truesight pierces invisibility, illusions, darkness, and false forms. It doesn't pierce total cover or make you hear better. #DnD https://t.co/VWKsJGFxqW — Jeremy Crawford (@JeremyECrawford) October 12, 2016

Can you cast Charm person on a creature charmed by Strahd?

@JeremyECrawford Can you cast Charm person on a creature charmed by Strahd? — Richard Blankenship (@dickboner93) October 24, 2016 The charm person spell can target someone who is charmed by another effect, unless that effect says the target is immune. #DnD https://t.co/L64Ykhrtia — Jeremy Crawford (@JeremyECrawford) October 24, 2016