What was Marin hiding?
That was revealed on The Sinner Season 2 Episode 3 as Heather continued her investigation to ensure she was in the know about everything.
Meanwhile, Vera and Julian were dealt a hard blow as more details about the double murder were revealed, and it made them question whether someone close to them could be lying.
What did they find out about the night of the murder?
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Paul Dailly is the Associate Editor for TV Fanatic. Follow him on Twitter.