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Secrets and Lies Finale Sneak Peek: Cornell Closes In on Eric's Blackmailer

Could Eric Warner’s blackmailer be a member of his own family?

That’s what Detective Cornell deduces in TVLine’s exclusive clip from Sunday’s two-hour Secrets and Lies season finale (ABC, 9/8c), during which Kate’s killer will finally be revealed.

As a bonus, our clip also features some phenomenal snark from a sassy French Stewart (3rd Rock From the Sun), who plays medical examiner John Patrick. My personal favorite moment is his reaction to the blackmailer’s magazine cut-out approach: “How very 1973!”

Hit PLAY on the video above, then drop a comment below with your final guesses: Who killed Kate Warner?